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149-516: Therapist David Grand indicates he developed brainspotting in 2003 after working with 9/11 survivors and other patients. David Grand was previously trained in psychoanalysis in the 1980s and EMDR in 1993. He combined EMDR, psychoanalysis, and somatic experiencing into a modality he titled “Natural Flow EMDR,” which became the precursor for brainspotting. Grand states that the motto of brainspotting is, “Where you look affects how you feel”. He has hypothesized that allowing one’s gaze to be focused on

298-464: A recommended intervention for PTSD under its clinical practice guidelines for mental health professionals. September 11 attacks The September 11 attacks , commonly known as 9/11 , were four coordinated Islamist terrorist suicide attacks carried out by al-Qaeda against the United States in 2001. Nineteen terrorists hijacked four commercial airliners, crashing the first two into

447-807: A 1970 account was supposed to accommodate 130,000 people. On a typical weekday, an estimated 50,000 people worked in the complex and another 140,000 passed through as visitors. The World Trade Center was so large that it had its own zip code: 10048 . The towers offered expansive views from the observation deck atop the South Tower and the Windows on the World restaurant on top of the North Tower. The Twin Towers became known worldwide, appearing in numerous movies and television shows as well as on postcards and other merchandise. It became

596-451: A 362 foot (110 m) telecommunications antenna or mast that was built on the roof in 1979 (which was upgraded in 1999 to accommodate DTV broadcasts). With this addition, the highest point of the North Tower reached 1,730 feet (530 m). Chicago's Willis Tower , then called Sears Tower, which was finished in May 1973 , reached 1,450 feet (440 m) at the rooftop. When completed in 1973,

745-755: A New York icon, in the same league as the Empire State Building, the Chrysler Building, and the Statue of Liberty . The World Trade Center was compared to Rockefeller Center , which David Rockefeller's brother Nelson Rockefeller had developed in midtown Manhattan. One World Trade Center and Two World Trade Center, commonly referred to as the Twin Towers , were designed by architect Minoru Yamasaki as framed tube structures, which provided tenants with open floor plans, uninterrupted by columns or walls. They were

894-488: A business writer, it also was the origin of the electronic component distribution business. The idea of establishing a World Trade Center in New York City was first proposed in 1943. The New York State Legislature passed a bill authorizing New York Governor Thomas E. Dewey to begin developing plans for the project, but the plans were put on hold in 1949. During the late 1940s and 1950s, economic growth in New York City

1043-785: A commercial pilot's license. Hanjour arrived in San Diego on December 8, 2000, joining Hazmi. They soon left for Arizona, where Hanjour took refresher training. Marwan al-Shehhi arrived at the end of May 2000, while Atta arrived on June 3, 2000, and Jarrah arrived on June 27, 2000. Bin al-Shibh applied several times for a visa to the United States, but as a Yemeni, he was rejected out of concerns he would overstay his visa. Bin al-Shibh stayed in Hamburg, providing coordination between Atta and Mohammed. The three Hamburg cell members all took pilot training in South Florida at Huffman Aviation . In

1192-555: A few theories that 9/11 was selected by the hijackers as the date of the attack because it resembled 9-1-1 , the phone number used to report emergencies in the United States. However, Lawrence Wright wrote that the hijackers chose the date when John III Sobieski , the King of Poland and Grand Duke of Lithuania , began the battle that turned back the Ottoman Empire 's Muslim armies that were attempting to capture Vienna in 1683. Vienna

1341-558: A group of men from Hamburg , Germany, arrived in Afghanistan. The group included Mohamed Atta , Marwan al-Shehhi , Ziad Jarrah , and Ramzi bin al-Shibh. Bin Laden selected these men because they were educated, could speak English, and had experience living in the West. New recruits were routinely screened for special skills and al-Qaeda leaders consequently discovered that Hani Hanjour already had

1490-505: A height of 1,377 ft (420 m). On a clear day, visitors could see up to 50 miles (80 km). An anti-suicide fence was placed on the roof itself, with the viewing platform set back and elevated above it, requiring only an ordinary railing. This left the view unobstructed, unlike the observation deck of the Empire State Building. Windows on the World, the restaurant on the North Tower's 106th and 107th floors, opened in April 1976 . It

1639-586: A matter for the FBI". By late June, senior counter-terrorism official Richard Clarke and CIA director George Tenet were "convinced that a major series of attacks was about to come", although the CIA believed the attacks would likely occur in Saudi Arabia or Israel. In early July, Clarke put domestic agencies on "full alert", telling them, "Something spectacular is going to happen here, and it's going to happen soon". He asked

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1788-465: A period of transition, having just relocated back to Afghanistan from Sudan . The 1998 African embassy bombings and bin Laden's February 1998 fatwā marked a turning point of al-Qaeda's terrorist operation, as bin Laden became intent on attacking the United States. In late 1998 or early 1999, bin Laden approved Mohammed to go forward with organizing the plot. Atef provided operational support, including target selections and helping arrange travel for

1937-585: A religion that will prevent it from destroying all people. So we tell the Americans as people and we tell the mothers of soldiers and American mothers in general that if they value their lives and the lives of their children, to find a nationalistic government that will look after their interests and not the interests of the Jews . The continuation of tyranny will bring the fight to America, as [the 1993 World Trade Center bomber] Ramzi [Yousef] yourself and others did. This

2086-402: A specific external location will maintain the brain’s focus on an internal location where traumatic memories are stored, which would promote processing of these memories. Grand believes that influencing the visual field will influence neurological and psychological processes. Currently, no such evidence exists to support this hypothesis , though Grand and his colleague believe that the midbrain

2235-411: A square plan approximately 208 feet (63 m) in dimension on each side. The buildings were designed with narrow office windows 18 inches (46 cm) wide, which reflected Yamasaki's fear of heights as well as his desire to make building occupants feel secure. His design included building facades clad in aluminum-alloy. The World Trade Center was one of the most striking American implementations of

2384-439: A statement by him on September 16, 2001: "I stress that I have not carried out this act, which appears to have been carried out by individuals with their own motivation". In November 2001, U.S. forces recovered a videotape in which bin Laden, talking to Khaled al-Harbi , admitted foreknowledge of the attacks. On December 27, 2001, a second video of bin Laden was released in which he, stopping short of admitting responsibility for

2533-410: A strong, rigid wall structure, supporting virtually all lateral loads such as wind loads, and sharing the gravity load with the core columns. The perimeter structure containing 59 columns per side was constructed with extensive use of prefabricated modular pieces, each consisting of three columns, three stories tall, connected by spandrel plates. The spandrel plates were welded to the columns to create

2682-470: A telephone call mentioning the meeting, Mihdhar, and the name "Nawaf" (Hazmi); while the agency feared "Something nefarious might be afoot", it took no further action. The CIA had already been alerted by Saudi intelligence about Mihdhar and Hazmi being Al-Qaeda members. A CIA team broke into Mihdhar's Dubai hotel room and discovered that Mihdhar had a U.S. visa. While Alec Station alerted intelligence agencies worldwide, it did not share this information with

2831-409: A utility shaft that ran vertically between floors. Areas at the furthest extent of the fire were extinguished almost immediately; the original fire was put out in a few hours. Most of the damage was concentrated on the 11th floor, fueled by cabinets filled with paper, alcohol-based fluid for office machines, and other office equipment. Fireproofing protected the steel and there was no structural damage to

2980-520: Is closer to the site's eastern border. It was on this shoreline, close to the intersection of Greenwich and the former Dey Street , that Dutch explorer Adriaen Block 's ship, Tyger , burned to the waterline in November 1613, stranding him and his crew and forcing them to overwinter on the island. They built the first European settlement in Manhattan . The remains of the ship were buried under landfill when

3129-576: Is involved. Other researchers argue that such conceptualizations do not accurately reflect how memory functions in the brain. Brainspotting sessions involve focusing on a presenting problem, rating feelings of distress, focusing on bodily sensations, following guided eye gazes, and practicing focused mindfulness . There are several variations of brainspotting that may include bilateral stimulation via audio recordings called “BioLateral”, wearing goggles that block vision in one eye, or allowing clients to guide therapists on how to direct their gaze. There

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3278-546: Is my message to the American people: to look for a serious government that looks out for their interests and does not attack others, their lands, or their honor. My word to American journalists is not to ask why we did that but to ask what their government has done that forced us to defend ourselves. Bin Laden orchestrated the September 11 attacks. He initially denied involvement, but later recanted his denial. Al Jazeera broadcast

3427-475: Is very little quality evidence of efficacy or effectiveness of brainspotting. Although originally designed to treat PTSD , Grand claims that it can also be used to treat anxiety , depression , chronic fatigue syndrome , fibromyalgia , and ADHD . However, no evidence is cited for these claims. One single-subject case study reported that a patient with PTSD experienced lower levels of PTSD and depression symptoms after brainspotting sessions compared to before

3576-505: The 1993 World Trade Center Bombing Memorial fountain. The plaza was pervaded by Muzak background music that came from installed loudspeakers. For many years, the Plaza was often beset by brisk winds at ground level owing to the Venturi effect between the two towers. Some gusts were so strong that pedestrians' travel had to be aided by ropes. In 1997 Tony May opened an Italian restaurant in

3725-406: The 1982 Lebanon War . Some analysts, including political scientists John Mearsheimer and Stephen Walt , also claimed that U.S. support of Israel was a motive for the attacks. In 2004 and 2010, bin Laden again connected the September 11 attacks with U.S. support of Israel, although most of the letters expressed bin Laden's disdain for President Bush and bin Laden's hope to "destroy and bankrupt"

3874-966: The 9/11 Commission in April 2004, then— Attorney General John Ashcroft recalled that the "single greatest structural cause for the September 11th problem was the wall that segregated or separated criminal investigators and intelligence agents". Clarke also wrote: "[T]here were... failures to get information to the right place at the right time". Early on the morning of Tuesday, September 11, 2001, nineteen hijackers took control of four commercial airliners (two Boeing 757s and two Boeing 767s ). Large planes with long flights were selected for hijacking because they would have more fuel. * Eastern Daylight Time (UTC−04:00) Excluding hijackers Including emergency workers Including hijackers At 7:59 a.m., American Airlines Flight 11 took off from Logan International Airport in Boston . Fifteen minutes into

4023-637: The Arabian Peninsula . In a second 1998 fatwā , bin Laden outlined his objections to American foreign policy with respect to Israel , as well as the continued presence of American troops in Saudi Arabia after the Gulf War . Bin Laden maintained that Muslims are obliged to attack American targets until the aggressive policies of the U.S. against Muslims were reversed. The Hamburg cell in Germany included Islamists who eventually came to be key operatives in

4172-561: The Central Intelligence Agency informed President George W. Bush that its Counterterrorism Center had identified the attacks as having been the work of Al-Qaeda under Osama bin Laden . The United States formally responded by launching the war on terror and invading Afghanistan to depose the Taliban , which rejected U.S. terms to expel Al-Qaeda from Afghanistan and extradite its leaders. The U.S.'s invocation of Article 5 of

4321-696: The INS , the State Department, the Customs Service , and the FBI to put Hazmi and Mihdhar on their watchlists, but the FBI was prohibited from using criminal agents in searching for the duo, hindering their efforts. Also in July, a Phoenix -based FBI agent sent a message to FBI headquarters, Alec Station, and FBI agents in New York alerting them to "the possibility of a coordinated effort by Osama bin Laden to send students to

4470-706: The White House . Alerted to the previous attacks, the passengers revolted against the hijackers who crashed the aircraft into a field near Shanksville, Pennsylvania , at 10:03 a.m. The Federal Aviation Administration ordered an indefinite ground stop for all air traffic in U.S. airspace, preventing any further aircraft departures until September 13 and requiring all airborne aircraft to return to their point of origin or divert to Canada. The actions undertaken in Canada to support incoming aircraft and their occupants were collectively titled Operation Yellow Ribbon . That evening,

4619-617: The World Trade Center and the Pentagon. Another video obtained by Al Jazeera in September 2006 showed bin Laden with one of the attacks' chief planners, Ramzi bin al-Shibh , as well as hijackers, Hamza al-Ghamdi and Wail al-Shehri , amidst making preparations for the attacks. Journalist Yosri Fouda of the Arabic television channel Al Jazeera reported that in April 2002, al-Qaeda member Khalid Sheikh Mohammed admitted his involvement in

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4768-536: The World Trade Center site (colloquially "Ground Zero") took eight months and was completed in May 2002, while the Pentagon was repaired within a year. After delays in the design of a replacement complex, six new buildings were planned to replace the lost towers, along with a museum and memorial dedicated to those who were killed or injured in the attacks. The tallest building, One World Trade Center , began construction in November 2006; it opened in November 2014. Memorials to

4917-468: The framed-tube structural system used in the twin towers. The Port Authority's Engineering Department served as foundation engineers , Joseph R. Loring & Associates as electrical engineers , and Jaros, Baum & Bolles (JB&B) as mechanical engineers . Tishman Realty & Construction Company was the general contractor on the World Trade Center project. Guy F. Tozzoli , director of

5066-512: The shoreline was extended beginning in 1797 and was discovered during excavation work in 1916. The remains of a second eighteenth-century ship were discovered in 2010 during excavation work at the site. The ship, believed to be a Hudson River sloop , was found just south of where the Twin Towers stood, about 20 feet (6.1 m) below the surface. Later, the area became New York City's Radio Row , which existed from 1921 to 1966. The neighborhood

5215-659: The tallest buildings in the world ; they were also the tallest twin skyscrapers in the world until 1996, when the Petronas Towers opened. Other buildings in the complex included the Marriott World Trade Center (3 WTC), 4 WTC , 5 WTC , 6 WTC , and 7 WTC . The complex contained 13,400,000 square feet (1,240,000 m ) of office space and, prior to its completion, was projected to accommodate an estimated 130,000 people. The core complex cost about $ 400 million (equivalent to $ 2.31 billion in 2023). The idea

5364-431: The 107th floor to the top of the buildings were designed to support a tall communication antenna on top of each building. Only 1 WTC (North Tower) actually had a spire antenna fitted, which was added in May 1979. The truss system consisted of six trusses along the long axis of the core and four along the short axis. This truss system allowed some load redistribution between the perimeter and core columns and supported

5513-432: The 1960s by Bangladeshi-American structural engineer Fazlur Rahman Khan , was a new approach that allowed more open floor plans than the traditional design that distributed columns throughout the interior to support building loads. Each of the World Trade Center towers had 236 high-strength, load-bearing perimeter steel columns which acted as Vierendeel trusses . The perimeter columns were spaced closely together to form

5662-458: The 1998 fatwa , al-Qaeda identified the Iraq sanctions as a reason to kill Americans, condemning the "protracted blockade" among other actions that constitute a declaration of war against "Allah, his messenger, and Muslims". In 2004, bin Laden claimed that the idea of destroying the towers had first occurred to him in 1982 when he witnessed Israel's bombardment of high-rise apartment buildings during

5811-446: The 9/11 attacks were a strategic move to provoke America into a war that would incite a pan-Islamic revolution. Documents seized during the 2011 operation that killed bin Laden included notes handwritten by bin Laden in September 2002 with the heading "The Birth of the Idea of September 11". He describes how he was inspired by the crash of EgyptAir Flight 990 on October 31, 1999, which

5960-454: The 9/11 attacks. Mohamed Atta ; Marwan al-Shehhi ; Ziad Jarrah ; Ramzi bin al-Shibh; and Said Bahaji were all members of al-Qaeda's Hamburg cell. Bin Laden asserted that all Muslims must wage a defensive war against the United States and combat American aggression. He further argued that military strikes against American assets would send a message to the American people , attempting to force

6109-624: The CIA's Presidential Daily Brief, designated "For the President Only", was entitled Bin Ladin Determined To Strike in US . The memo noted that FBI information "indicates patterns of suspicious activity in this country consistent with preparations for hijackings or other types of attacks". In mid-August, one Minnesota flight school alerted the FBI about Zacarias Moussaoui , who had asked "suspicious questions". The FBI found that Moussaoui

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6258-566: The FBI and the State Department to alert the embassies and police departments, and the Defense Department to go to "Threat Condition Delta". Clarke later wrote: Somewhere in CIA there was information that two known al Qaeda terrorists had come into the United States. Somewhere in the FBI, there was information that strange things had been going on at flight schools in the United States.   [...] They had specific information about individual terrorists from which one could have deduced what

6407-516: The FBI's international terrorism division, emailed his superiors at the CIA's Counterterrorism Center (CTC) requesting permission to inform the FBI that Hazmi was in the country and that Mihdhar had a U.S. visa. The CIA never responded. The same day, Margarette Gillespie, an FBI analyst working in the CTC, was told to review material about the Malaysia meeting. She was not told of the participant's presence in

6556-507: The FBI. The Malaysian Special Branch observed the January 5, 2000, meeting of the two al-Qaeda members and informed the CIA that Mihdhar, Hazmi, and Khallad were flying to Bangkok , but the CIA never notified other agencies of this, nor did it ask the State Department to put Mihdhar on its watchlist. An FBI liaison asked permission to inform the FBI of the meeting but was told: "This is not

6705-512: The Greatest Bar on Earth and Cellar in the Sky (reopened after Labor Day ) replaced the original restaurant offshoots. In 1999, Cellar in the Sky was changed into an American steakhouse and renamed as Wild Blue. In 2000 (its last full year of operation), Windows on the World reported revenues of $ 37 million, making it the highest-grossing restaurant in the United States. The Skydive Restaurant, which

6854-646: The Hudson River. In a December 1961 meeting between Port Authority director Austin J. Tobin and newly elected New Jersey Governor Richard J. Hughes , the Port Authority offered to take over the H&;M Railroad. They also decided to move the World Trade Center project to the Hudson Terminal building site on the west side of Lower Manhattan, a more convenient location for New Jersey commuters arriving via PATH . With

7003-614: The North Atlantic Treaty —its only usage to date—called upon allies to fight al-Qaeda. As U.S. and NATO invasion forces swept through Afghanistan, bin Laden eluded them . He denied any involvement until 2004 , when excerpts of a taped statement in which he accepted responsibility for the attacks were released. Al-Qaeda's cited motivations included U.S. support of Israel , the presence of U.S. military bases in Saudi Arabia and sanctions against Iraq . The nearly decade-long manhunt for bin Laden concluded on May 2, 2011, when he

7152-475: The North Tower within Tobin Plaza for musicians and performers. These series of concerts and events were called "CenterStage at the World Trade Center". At the center of the plaza stood the monumental sculpture The Sphere by German artist Fritz Koenig . The world's largest bronze sculpture of modern times was surrounded by a fountain. The site had other sculptures such as Ideogram , Cloud Fortress , and

7301-416: The Pentagon , which contains more than 64,000 workers, a military base which has a big concentration of army and intelligence ... As for the World Trade Center , the ones who were attacked and who died in it were part of a financial power. It wasn't a children's school! Neither was it a residence. The consensus is that most of the people who were in the towers were men who backed the biggest financial force in

7450-447: The Port Authority leased operation of the observatory to Ogden Entertainment, which decided to renovate it. On April 30, 1997, the Top of the World tour reopened after renovations were finished. Attractions added to the observation deck included 24 video monitors, which provided descriptions of 44 points of interest in six languages; a theater showing a film of a simulated helicopter tour around

7599-512: The Port Authority's approved plans to privatize the World Trade Center in the late 1990s, they sought to lease it to a private entity in 2001. Bids for the lease came from Vornado Realty Trust ; a joint bid between Brookfield Properties Corporation and Boston Properties ; and a joint bid by Silverstein Properties and the Westfield Group . Privatizing the World Trade Center would add it to

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7748-409: The Port Authority's chief engineer, John M. Kyle Jr., involved digging a trench, and as excavation proceeded, filling the space with a slurry consisting of a mixture of bentonite and water, which plugged holes and kept groundwater out. When the trench was dug out, a steel cage was inserted and concrete was poured in, forcing the slurry out. It took fourteen months for the slurry wall to be completed. It

7897-498: The September 11 attacks, mentions of the complex in various media were altered or deleted , and several dozen "memorial films" were created. The World Trade Center experienced several major crime and terrorist incidents, including a fire on February 13 , 1975; a bombing on February 26 , 1993; and a bank robbery on January 14 , 1998, all of which led to the terrorist attacks on September 11, 2001, when al-Qaeda -affiliated hijackers flew two Boeing 767 jets, one into each of

8046-423: The South Tower became the second tallest building in the world at 1,362 feet (415 m). Its rooftop observation deck was 1,362 ft (415 m) high and its indoor observation deck was 1,310 ft (400 m) high. Each tower stood over 1,350 feet (410 m) high, and occupied about 1 acre (4,000 m ) of the total 16 acres (65,000 m ) of the site's land. During a press conference in 1973, Yamasaki

8195-465: The Twin Towers of the World Trade Center in New York City and the third into the Pentagon (headquarters of the U.S. Department of Defense ) in Arlington County, Virginia . The fourth plane crashed in rural Pennsylvania during a passenger revolt. The September 11 attacks killed 2,977 people, making it the deadliest terrorist attack in history. In response to the attacks, the United States waged

8344-408: The Twin Towers, seventeen minutes apart; between 16,400 and 18,000 people were in the Twin Towers when they were struck. The fires from the impacts were intensified by the planes' burning jet fuel, which, along with the initial damage to the buildings' structural columns, ultimately caused both towers to collapse . The attacks killed 2,606 people in and around the towers, as well as all 157 on board

8493-560: The Twin Towers, the plan for the World Trade Center complex included four other low-rise buildings, which were built in the early 1970s. The 47-story 7 World Trade Center building was added in the 1980s, to the north of the main complex. Altogether, the main World Trade Center complex occupied a 16-acre (65,000 m ) superblock . The World Trade Center complex housed more than 430 companies that were engaged in various commercial activities. The complex hosted 13,400,000 square feet (1,240,000 m ) of office space, which according to

8642-547: The U.S. Other motives have been suggested in addition to those stated by bin Laden and al-Qaeda. Some authors suggested the "humiliation" that resulted from the Islamic world falling behind the Western world—this discrepancy was rendered especially visible by globalization and a desire to provoke the U.S. into a broader war against the Islamic world in the hope of motivating more allies to support al-Qaeda. Similarly, others have argued

8791-441: The U.S. The CIA gave Gillespie surveillance photos of Mihdhar and Hazmi from the meeting to show to FBI counterterrorism but did not tell her their significance. The Intelink database informed her not to share intelligence material with criminal investigators. When shown the photos, the FBI refused more details on their significance, and they were not given Mihdhar's date of birth or passport number. In late August 2001, Gillespie told

8940-450: The U.S. economy and induced global market shocks . Many other countries strengthened anti-terrorism legislation and expanded their powers of law enforcement and intelligence agencies . The total number of deaths caused by the attacks, combined with the death tolls from the conflicts they directly incited, has been estimated by the Costs of War Project to be over 4.5 million. Cleanup of

9089-508: The U.S. to re-evaluate its support to Israel , and other aggressive policies. In a 1998 interview with American journalist John Miller , bin Laden stated: We do not differentiate between those dressed in military uniforms and civilians; they are all targets in this fatwa. American history does not distinguish between civilians and military, not even women and children. They are the ones who used bombs against Nagasaki. Can these bombs distinguish between infants and military? America does not have

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9238-438: The United States to attend civil aviation universities and colleges". The agent, Kenneth Williams, suggested the need to interview flight school managers and identify all Arab students seeking flight training. In July, Jordan alerted the U.S. that al-Qaeda was planning an attack on the U.S.; "months later", Jordan notified the U.S. that the attack's codename was "The Big Wedding" and that it involved airplanes. On August 6, 2001,

9387-401: The World Trade Center towers could be subjected to and structural response to those forces. Experiments also were done to evaluate how much sway occupants could comfortably tolerate; however, many subjects experienced dizziness and other ill effects. One of the chief engineers Leslie Robertson worked with Canadian engineer Alan G. Davenport to develop viscoelastic dampers to absorb some of

9536-564: The World Trade Department at the Port Authority, and Rino M. Monti, the Port Authority's Chief Engineer, oversaw the project. As an interstate agency, the Port Authority was not subject to the local laws and regulations of the City of New York, including building codes . Nonetheless, the World Trade Center's structural engineers ended up following draft versions of New York City's new 1968 building codes. The framed-tube design, introduced in

9685-467: The architectural ethic of Le Corbusier and was the seminal expression of Yamasaki's gothic modernist tendencies. He was also inspired by Islamic architecture , elements of which he incorporated in the building's design, having previously designed Saudi Arabia's Dhahran International Airport with the Saudi Binladin Group . A major limiting factor in building height is the issue of elevators;

9834-619: The area for the World Trade Center by March 1965, and demolition of Radio Row began in March 1966. It was completely demolished by the end of the year. Approval was also needed from New York City Mayor John Lindsay and the New York City Council . Disagreements with the city centered on tax issues, and the New York City Planning Commission wanted the Port Authority to increase its payments in lieu of taxes (PILOT) to

9983-761: The attacks include the National September 11 Memorial & Museum in New York City, the Pentagon Memorial in Arlington County, Virginia, and the Flight 93 National Memorial at the Pennsylvania crash site. In 1996, Osama bin Laden of the Islamist militant organization al-Qaeda issued his first fatwā , which declared war against the United States and demanded the expulsion of all American soldiers from

10132-826: The attacks and said they were carried out because: The events that affected my soul in a direct way started in 1982 when America permitted the Israelis to invade Lebanon and the American Sixth Fleet helped them in that. This bombardment began and many were killed and injured and others were terrorised and displaced. I couldn't forget those moving scenes, blood and severed limbs, women and children sprawled everywhere. Houses were destroyed along with their occupants, high rises demolished over their residents, rockets raining down on our home without mercy...As I looked at those demolished towers in Lebanon, it entered my mind that we should punish

10281-461: The attacks as retaliatory strikes against American atrocities against Muslims across the world. He also maintained that the attacks were not directed against women and children, asserting that the targets of the strikes were symbols of America's "economic and military power". In bin Laden's November 2002 Letter to the American People , he identified al-Qaeda's motives for the attacks: After

10430-408: The attacks, along with Ramzi bin al-Shibh. The 2004 9/11 Commission Report determined that the animosity which Mohammed, the principal architect of the 9/11 attacks, felt towards the United States had stemmed from his "violent disagreement with U.S. foreign policy favoring Israel". Mohammed was also an adviser and financier of the 1993 World Trade Center bombing and the uncle of Ramzi Yousef ,

10579-402: The attacks, bin Laden and Ayman al-Zawahiri released additional recordings , some of which repeated the above reasons. Two relevant publications were bin Laden's 2002 Letter to the American People and a 2004 videotape by bin Laden. [...] those young men, for whom God has cleared the way, didn't set out to kill children, but rather attacked the biggest centre of military power in the world,

10728-469: The attacks, said: It has become clear that the West in general and America in particular have an unspeakable hatred for Islam.   ... It is the hatred of crusaders . Terrorism against America deserves to be praised because it was a response to injustice, aimed at forcing America to stop its support for Israel, which kills our people.   ... We say that the end of the United States is imminent, whether Bin Laden or his followers are alive or dead, for

10877-440: The attacks, some from smoke inhalation. Sheikh Omar Abdel Rahman and four other individuals were later convicted for their involvement in the bombing, while Yousef and Eyad Ismoil were convicted for carrying out the bombing. According to a presiding judge, the conspirators' chief aim at the time of the attack was to destabilize the North Tower and send it crashing into the South Tower, toppling both skyscrapers. Following

11026-511: The awakening of the Muslim ummah [nation] has occurred.   ... It is important to hit the economy (of the United States), which is the base of its military power...If the economy is hit they will become reoccupied. Shortly before the 2004 U.S. presidential election , bin Laden used a taped statement to publicly acknowledge al-Qaeda's involvement in the attacks. He admitted his direct link to

11175-605: The bathtub began in late 1967. Construction work began on the North Tower in August 1968 , and construction on the South Tower was under way by January 1969 . The original Hudson Tubes , which carried PATH trains into Hudson Terminal, remained in service during the construction process until 1971, when a new station opened. The topping out ceremony of 1 WTC (North Tower) took place on December 23 , 1970, while 2 WTC's ceremony (South Tower) occurred on July 19 , 1971. Extensive use of prefabricated components helped to speed up

11324-409: The bombing, floors that were blown out needed to be repaired to restore the structural support they provided to columns. The slurry wall was in peril following the bombing and the loss of the floor slabs that provided lateral support against pressure from Hudson River water on the other side. The refrigeration plant on sublevel B5, which provided air conditioning to the entire World Trade Center complex,

11473-544: The buildings would each have to be 110 stories tall. The Port Authority publicly presented a model for the complex on January 18, 1964. The original plans called for two towers rising 1,350 feet (410 m), as well as several six-story buildings surrounding a central plaza (later the Austin J. Tobin Plaza ). These buildings were to include office space, restaurants, a hotel, exhibition space, stores, and an information center about world trade. The agency released its final model of

11622-527: The center marking where the Twin Towers stood. One World Trade Center , the tallest building in the Western Hemisphere at 1,776 feet (541 m) and the lead building for the new complex, completed construction in May 2013 and opened in November 2014. The western portion of the World Trade Center site was originally under the Hudson River . The shoreline was in the vicinity of Greenwich Street , which

11771-427: The city called "Manhattan Magic"; a model of Manhattan with 750 buildings; a Kodak photo booth and two gift shops. The 107th-floor also featured a subway -themed food court that featured Sbarro Street Station and Nathan's Famous Hot Dogs with a dining area that simulated Central Park . Weather permitting, visitors could ride two short escalators up from the 107th-floor viewing area to an outdoor platform at

11920-511: The city government. On August 3 , 1966, an agreement was reached whereby the Port Authority would make annual PILOTs for the portion of the World Trade Center leased to private tenants. In subsequent years, the payments would rise as the real estate tax rate increased. In May 1967, the New York City Planning Commission approved several changes to the street grid that would allow the Port Authority to begin acquiring land for

12069-402: The city's tax rolls and provide funds for other Port Authority projects. On February 15 , 2001, the Port Authority announced that Vornado Realty Trust had won the World Trade Center lease, paying $ 3.25 billion for the 99-year lease. Vornado outbid Silverstein by $ 600 million though Silverstein upped his offer to $ 3.22 billion. However, Vornado insisted on last minute changes to

12218-510: The completion of the Sears Tower in 1973. They were not surpassed until the construction of the Burj Khalifa , which opened in 2010. The towers were also the world's tallest twin towers until 1996, when the Petronas Towers opened. Each tower had a total mass of around 500,000 tons. The original World Trade Center had a five-acre (two-hectare) plaza around which all of the buildings in

12367-407: The complex in March 1966. Despite public criticism over the height of the 110-story twin towers, Yamasaki & Associates and Emery Roth & Sons made only relatively minor changes to the plans, which were released in May 1966. The revised plans called for the twin towers and four additional low-rise structures to surround the central plaza. Yamasaki's design for the World Trade Center called for

12516-404: The complex, including the Twin Towers, were centered. World Trade Center officials had wanted the plaza to be a "contemplative space" or a Zen garden . In 1982, the plaza was renamed after Port Authority's late chairman, Austin J. Tobin, who authorized the construction of the original World Trade Center. During the summer, the Port Authority installed a portable stage, typically backed up against

12665-401: The complex. On September 20 , 1962, the Port Authority announced the selection of Minoru Yamasaki as lead architect and Emery Roth & Sons as associate architects. Yamasaki devised the plan to incorporate twin towers. His original plan called for the towers to be 80 stories tall, but to meet the Port Authority's requirement for 10,000,000 square feet (930,000 m ) of office space,

12814-461: The construction of the World Trade Center took place on August 5 , 1966. The site of the World Trade Center was located on filled land with the bedrock located 65 feet (20 m) below. To construct the World Trade Center, it was necessary to build a " bathtub " with a slurry wall around the West Street side of the site, to keep water from the Hudson River out. The slurry method selected by

12963-513: The construction process, and the first tenants moved into the North Tower on December 15, 1970 , while it was still under construction, while the South Tower began accepting tenants in January 1972 . The complex had 111 tenants with a combined 1,800 employees by late 1971. When the Twin Towers were completed, the total costs to the Port Authority had reached $ 900 million. The ribbon-cutting ceremony took place on April 4 , 1973. In addition to

13112-462: The course. Windows on the World was forced to close following the 1993 World Trade Center bombing as the explosion damaged receiving areas, storage and parking spots used by the restaurant complex. On May 12, 1994, the Joseph Baum & Michael Whiteman Company won the contract to run the restaurants after Windows's former operator, Inhilco , gave up its lease. After its reopening on June 26, 1996,

13261-435: The deadliest terrorist attack in history as well as the deadliest incident for firefighters and law enforcement personnel in American history, killing 343 and 72 members, respectively. The loss of life stemming from the impact of Flight 11 made it the most lethal multi-plane crash in aviation history followed by the death toll incurred by Flight 175. The destruction of the World Trade Center and its environs seriously harmed

13410-443: The deal, including a shorter 39-year lease, which the Port Authority considered nonnegotiable. Vornado later withdrew and Silverstein's bid for the lease to the World Trade Center was accepted on April 26 , 2001, and closed on July 24 , 2001. On September 11, 2001 , Islamist terrorists hijacked two commercial airliners and crashed them into the Twin Towers. One group led by Mohamed Atta crashed American Airlines Flight 11 into

13559-501: The design to stack local elevators within the same elevator shaft. Located on the 44th and 78th floors of each tower, the sky lobbies enabled the elevators to be used efficiently. This increased the amount of usable space on each floor from 62 to 75 percent by reducing the number of elevator shafts. Altogether, the World Trade Center had 95 express and local elevators. The structural engineering firm Worthington, Skilling, Helle & Jackson worked to implement Yamasaki's design, developing

13708-480: The destruction of the remaining five structures in the complex and damaging or destroying nearby buildings. American Airlines Flight 77 flew towards Washington, D.C. and crashed into the Pentagon at 9:37 a.m., causing a partial collapse. The fourth and final flight, United Airlines Flight 93 , also changed course towards Washington, believed by investigators to target either the United States Capitol or

13857-523: The fire and was criminally charged. The first terrorist attack on the World Trade Center occurred on February 26, 1993, at 12:17 p.m. A Ryder truck filled with 1,500 pounds (680 kg) of explosives (planted by Ramzi Yousef ) detonated in the North Tower's underground garage. The blast opened a 100 ft (30 m) hole through five sublevels, with the greatest damage occurring on levels B1 and B2 and significant structural damage on level B3. Six people were killed and 1,042 others were injured in

14006-505: The flight, five hijackers armed with boxcutters took over the plane, injuring at least three people (and possibly killing one) before forcing their way into the cockpit. The terrorists also displayed an apparent explosive and sprayed mace into the cabin, to frighten the hostages into submission and further hinder resistance. Back at Logan, United Airlines Flight 175 took off at 8:14 a.m. Hundreds of miles southwest at Dulles International Airport , American Airlines Flight 77 left

14155-497: The floors. The trusses connected to the perimeter at alternate columns and were on 6 foot 8 inch (2.03 m) centers. The top chords of the trusses were bolted to seats welded to the spandrels on the exterior side and a channel welded to the core columns on the interior side. The floors were connected to the perimeter spandrel plates with viscoelastic dampers that helped reduce the amount of sway felt by building occupants. Hat trusses (or "outrigger trusses") located from

14304-531: The gate at 8:00 a.m., the plane was running 42 minutes late. At 8:46 a.m., Flight 11 was deliberately crashed into the north face of the World Trade Center's North Tower between the 93rd and 99th floors. The initial presumption by many was that it was an accident. At 8:51 a.m., American Airlines Flight 77 was also taken over by five hijackers who forcibly entered the cockpit 31 minutes after take-off. Although they were equipped with knives, there were no reports of anyone on board being stabbed, nor did

14453-457: The governors of both New York and New Jersey . New Jersey Governor Robert B. Meyner objected to New York getting a $ 335 million project. Toward the end of 1961, negotiations with outgoing New Jersey Governor Meyner reached a stalemate. At the time, ridership on New Jersey's H&M Railroad had declined substantially—from a high of 113 million riders in 1927, to 26 million in 1958—after new automobile tunnels and bridges had opened across

14602-741: The hijackers. Bin Laden overruled Mohammed, rejecting potential targets such as the U.S. Bank Tower in Los Angeles for lack of time. Bin Laden provided leadership and financial support and was involved in selecting participants. He initially selected Nawaf al-Hazmi and Khalid al-Mihdhar , both experienced jihadists who had fought in Bosnia . Hazmi and Mihdhar arrived in the United States in mid-January 2000. In early 2000, Hazmi and Mihdhar took flying lessons in San Diego, California. Both spoke little English, performed poorly in flying lessons, and eventually served as secondary "muscle" hijackers. In late 1999,

14751-555: The lead bomber in that attack. In late 1994, Mohammed and Yousef moved on to plan a new terrorist attack called the Bojinka plot planned for January 1995. Despite a failure and Yousef's capture by U.S. forces the following month, the Bojinka plot would influence the later 9/11 attacks. In "Substitution for Testimony of Khalid Sheikh Mohammed" from the trial of Zacarias Moussaoui , five people are identified as having been completely aware of

14900-619: The lease to Silverstein Properties in July 2001 . During its existence, the World Trade Center symbolized globalization and the economic prosperity of the U.S. Although its design was initially criticized by New Yorkers and architectural critics, the Twin Towers became an icon of New York City. It had a major role in popular culture , and according to one estimate was depicted in 472 films. The Twin Towers were also used in Philippe Petit 's tightrope-walking performance on August 7, 1974. Following

15049-400: The main buildings of the World Trade Center. Construction of the North Tower at One World Trade Center began in 1966 with the South Tower at Two World Trade Center. When completed in 1972, 1 World Trade Center became the tallest building in the world for two years, surpassing the Empire State Building after its 40-year reign. The North Tower stood 1,368 feet (417 m) tall and featured

15198-429: The modular pieces off-site at the fabrication shop. Adjacent modules were bolted together with the splices occurring at mid-span of the columns and spandrels. The spandrel plates were located at each floor, transmitting shear stress between columns, allowing them to work together in resisting lateral loads. The joints between modules were staggered vertically so that the column splices between adjacent modules were not on

15347-461: The morning of August 7, 1974, Philippe Petit performed a high-wire walk between the North and South Towers of the World Trade Center. For his unauthorized feat 1,312 feet (400 m) above the ground, he rigged a 440-pound (200 kg) cable and used a custom-made 30-foot-long (9.1 m), 55-pound (25 kg) balancing pole. He performed for 45 minutes, making eight passes along the wire. Though Petit

15496-633: The multi-decade global war on terror to eliminate hostile groups deemed terrorist organizations, as well as the foreign governments purported to support them. Ringleader Mohamed Atta flew American Airlines Flight 11 into the North Tower of the World Trade Center complex in Lower Manhattan at 8:46 a.m. Seventeen minutes later, United Airlines Flight 175 hit the South Tower . Both collapsed within an hour and forty-one minutes, bringing about

15645-494: The new location and the Port Authority's acquisition of the H&M Railroad, New Jersey agreed to support the World Trade Center project. As part of the deal, the Port Authority renamed the H&M "Port Authority Trans-Hudson", or PATH for short. To compensate Radio Row business owners for their displacement, the Port Authority gave each business $ 3,000 without regard to how long the business had been there or how prosperous it was. The Port Authority began purchasing properties in

15794-475: The north of the superblock. Beneath the World Trade Center complex was an underground shopping mall . It had connections to various mass transit facilities, including the New York City Subway system and the Port Authority's PATH trains. One of the world's largest gold depositories was located underneath the World Trade Center, owned by a group of commercial banks. The 1993 bombing detonated close to

15943-403: The operation's details. They are bin Laden, Khalid Sheikh Mohammed, Ramzi bin al-Shibh , Abu Turab al-Urduni and Mohammed Atef . Osama bin Laden's declaration of a holy war against the United States, and a 1998 fatwā signed by bin Laden and others that called for the killing of Americans, are seen by investigators as evidence of his motivation. In November 2001, bin Laden defended

16092-514: The oppressor in kind and that we should destroy towers in America so that they taste some of what we tasted and so that they be deterred from killing our women and children. And that day, it was confirmed to me that oppression and the intentional killing of innocent women and children is a deliberate American policy. Destruction is freedom and democracy, while resistance is terrorism and intolerance. Bin Laden personally directed his followers to attack

16241-569: The organization-including Abu Hafs the Mauritanian , Sheikh Saeed al Masri , and Sayf al Adl . One senior al Qaeda operative claims to recall Bin Ladin arguing that attacks against the United States needed to be carried out immediately to support insurgency in the Israeli-occupied territories and protest the presence of U.S. forces in Saudi Arabia. On July 13, Tom Wilshire, a CIA agent assigned to

16390-431: The plaza next to 4 World Trade Center called "Gemelli". The following year, he opened another restaurant in an adjacent place called "Pasta Break". On June 9, 1999, the outdoor plaza reopened after undergoing $ 12 million in renovations. This involved replacing marble pavers with over 40,000 gray and pink granite stones, as well as adding benches, planters, food kiosks, and outdoor dining areas. Although most of

16539-528: The plaza. 6 World Trade Center , at the northwest corner, housed the United States Customs Service . 5 World Trade Center was located at the northeast corner above the PATH station, and 4 World Trade Center , located at the southeast corner, housed the U.S. Commodities Exchange . In 1987, construction was completed on a 47-floor office building, 7 World Trade Center , located to

16688-429: The remains of the other buildings were demolished. On May 30, 2002, the last piece of WTC steel was ceremonially removed. A new World Trade Center complex is being built with six new skyscrapers and several other buildings, many of which are complete. A memorial and museum to those killed in the attacks, a new rapid transit hub , and an elevated park have opened. The memorial features two square reflecting pools in

16837-408: The restaurant two out of four stars, signifying a "very good" quality. In his 2009 book Appetite , William Grimes wrote that, "At Windows, New York was the main course". In 2014, Ryan Sutton of Eater.com compared the now-destroyed restaurant's cuisine to that of its replacement, One World Observatory . He said, "Windows helped usher in a new era of captive audience dining in that the restaurant

16986-582: The runway at 8:20 a.m. Flight 175's journey proceeded normally for 28 minutes until 8:42 am, when a group of five hijacked the plane, murdering both pilots and stabbing several crew members before assuming control of the aircraft. These hijackers also used bomb threats to instil fear into the passengers and crew, also spraying chemical weapons to disable any opposition. Concurrently, United Airlines Flight 93 departed from Newark International Airport in New Jersey ; originally scheduled to pull away from

17135-400: The same floor. Below the 7th floor to the foundation, there were fewer, wider-spaced perimeter columns to accommodate doorways. The core of the towers housed the elevator and utility shafts, restrooms, three stairwells, and other support spaces. The core of each tower was a rectangular area 87 by 135 feet (27 by 41 m) and contained 47 steel columns running from the bedrock to the top of

17284-404: The second floor, visitors were required to pass through security checks added after the 1993 World Trade Center bombing . They were then sent to the 107th-floor indoor observatory at a height of 1,310 feet (400 m) by a dedicated express elevator, which could be only accessed by entering the core. The exterior columns were narrowed to allow 28 inches of window width between them. In 1995,

17433-572: The session. Another study compared, via within-subjects design, the effects of effects of a single 40-min session of Eye Movement Desensitization and Reprocessing (EMDR), Brainspotting (BSP), Body Scan Meditation (BSM), and placebo reading condition in the processing of distressing memories reported by a non-clinical sample of adult participants (psychologists and medical doctors attending a four-year specialization in Systemic Psychotherapy at an Italian Institute of Family Therapy). The authors of

17582-500: The space in the World Trade Center complex was off-limits to the public, the South Tower featured a public glass-enclosed observation deck on the 107th floor called Top of the World and an open-air deck with the height of 110 stories. The observation deck opened in December 1975 and operated from 9:30 a.m. to 11:30 p.m. (June to August) and from 9:30 a.m. – 9:30 p.m. (September to May). After paying an entrance fee in

17731-541: The spring of 2001, the secondary hijackers began arriving in the United States. In July 2001, Atta met with bin al-Shibh in Tarragona , Catalonia, Spain, where they coordinated details of the plot, including final target selection. Bin al-Shibh passed along bin Laden's wish for the attacks to be carried out as soon as possible. Some of the hijackers received passports from corrupt Saudi officials who were family members or used fraudulent passports to gain entry. There have been

17880-823: The study wrote "As far as the specific experimental design employed in the current study is concerned, EMDR and BSP thus appeared to be comparable in terms of efficacy in reducing healthy participants’ subjective disturbance connected with distressing memories." Although at least 6000 clinicians have been trained in brainspotting, there is no quality evidence of its efficacy and it instead relies on anecdotal claims. Existing studies have been critiqued due to being solely authored by brainspotting’s originators and collaborators, indicating potential bias . Published articles that indicate or hypothesize its efficacy have small sample sizes, utilize non-clinical populations, or are published in journals that are not peer-reviewed . The American Psychological Association does not list brainspotting as

18029-524: The sways. These viscoelastic dampers, used throughout the structures at the joints between floor trusses and perimeter columns along with some other structural modifications, reduced the building sway to an acceptable level. In March 1965, the Port Authority began acquiring property at the World Trade Center site. Demolition work began on March 21 , 1966, to clear thirteen square blocks of low rise buildings in Radio Row for its construction. Groundbreaking for

18178-434: The taller the building, the more elevators are needed to service it, requiring more space-consuming elevator banks. Yamasaki and the engineers decided to use a new system with two " sky lobbies "—floors where people could switch from a large-capacity express elevator to a local elevator that goes to each floor in a section. This system, inspired by the local-express train operation used in New York City's subway system, allowed

18327-402: The terrorists when combined with the delayed takeoff. They stormed the cockpit and seized control of the plane at 9:28 a.m., turning the plane eastbound towards Washington, D.C. Much like their counterparts on the first two flights, the fourth team used bomb threats and filled the cabin with mace. World Trade Center (1973%E2%80%932001) The original World Trade Center ( WTC )

18476-438: The tower. In addition to fire damage on the 9th through the 14th floors, the water used to extinguish the fire damaged a few of the floors below. At that time, the World Trade Center had no fire sprinkler systems . On March 12, 1981, the Port Authority announced a $ 45 million plan to install sprinklers throughout the World Trade Center. A disgruntled custodian, 19 year old Oswald Adorno, was discovered to have deliberately started

18625-454: The tower. The large, column-free space between the perimeter and core was bridged by prefabricated floor trusses. The floors supported their own weight as well as live loads , providing lateral stability to the exterior walls and distributing wind loads among the exterior walls. The floors consisted of 4-inch (10 cm) thick lightweight concrete slabs laid on a fluted steel deck. A grid of lightweight bridging trusses and main trusses supported

18774-540: The transmission tower. The framed-tube design, using steel core and perimeter columns protected with sprayed-on fire-resistant material, created a relatively lightweight structure that would sway more in response to the wind compared to traditional structures, such as the Empire State Building that has thick, heavy masonry for fireproofing of steel structural elements. During the design process, wind tunnel tests were done to establish design wind pressures that

18923-485: The two aircraft. Falling debris from the towers, combined with fires in several surrounding buildings that were initiated by falling debris, led to the partial or complete collapse of all the WTC complex's buildings, including 7 World Trade Center , and caused catastrophic damage to 10 other large structures in the surrounding area. The cleanup and recovery process at the World Trade Center site took eight months, during which

19072-424: The two people who made phone calls mention the use of mace or a bomb threat. Flight 175 was flown into the South Tower's southern facade (2   WTC) between the 77th and 85th floors at 9:03 a.m., demonstrating that the first crash was a deliberate act of terrorism. Four men aboard Flight 93 struck suddenly, killing at least one passenger, after having waited 46 minutes—a holdup that proved disastrous for

19221-454: The vault. Seven weeks after the September 11 attacks, $ 230 million in precious metals was removed from basement vaults of 4 WTC. This included 3,800 100-Troy-ounce 24 carat gold bars and 30,000 1,000-ounce silver bars. On February 13, 1975, a three-alarm fire broke out on the North Tower's 11th floor. It spread to the 9th and 14th floors after igniting telephone cable insulation in

19370-577: The world's first world trade center . They had two choices: the east side of Lower Manhattan , near the South Street Seaport ; or the west side, near the Hudson and Manhattan Railroad (H&M) station, Hudson Terminal . Initial plans, made public in 1961, identified a site along the East River for the World Trade Center. As a bi-state agency, the Port Authority required approval for new projects from

19519-466: The world, which spreads mischief throughout the world. As an adherent of Islam , bin Laden believed that non-Muslims are forbidden from having a permanent presence in the Arabian Peninsula . In 1996, bin Laden issued a fatwā calling for American troops to leave Saudi Arabia. One analysis of suicide terrorism suggested that without U.S. troops in Saudi Arabia, Al-Qaeda likely would not have been able to get people to commit to suicide missions. In

19668-511: Was a warehouse district in what is now Tribeca and the Financial District . Harry Schneck opened City Radio on Cortlandt Street in 1921, and eventually, the area held several blocks of electronics stores, with Cortlandt Street as its central axis. The used radios, war surplus electronics (e.g., AN/ARC-5 radios), junk, and parts were often piled so high they would spill out onto the street, attracting collectors and scroungers. According to

19817-452: Was a 180-seat cafeteria on the 44th floor of 1 WTC conceived for office workers, was also operated by Windows on the World. In its last iteration, Windows on the World received mixed reviews. Ruth Reichl , a New York Times food critic, said in December 1996 that "nobody will ever go to Windows on the World just to eat, but even the fussiest food person can now be content dining at one of New York's favorite tourist destinations". She gave

19966-640: Was a complex of seven buildings in the Financial District of Lower Manhattan in New York City . Built primarily between 1966 and 1975, it was dedicated on April 4, 1973, and was destroyed during the September 11 attacks in 2001. At the time of their completion, the 110-story-tall Twin Towers , including the original 1 World Trade Center (the North Tower) at 1,368 feet (417 m), and 2 World Trade Center (the South Tower) at 1,362 feet (415.1 m), were

20115-527: Was a destination in itself, rather than a lazy by-product of the vital institution it resided in." Five smaller buildings stood on the 16-acre (65,000 m ) block. One was the 22-floor hotel, which opened at the southwest corner of the site in 1981 as the Vista Hotel ; in 1995, it became the Marriott World Trade Center (3 WTC). Three low-rise buildings (4 WTC, 5 WTC, and 6 WTC), which were steel-framed office buildings, also stood around

20264-496: Was a radical who had traveled to Pakistan, and the INS arrested him for overstaying his French visa. Their request to search his laptop was denied by FBI headquarters due to the lack of probable cause . The failures in intelligence-sharing were attributed to 1995 Justice Department policies limiting intelligence-sharing, combined with CIA and NSA reluctance to reveal "sensitive sources and methods" such as tapped phones. Testifying before

20413-466: Was about to happen. None of that information got to me or the White House. [...] by July [2001], with word spreading of a coming attack, a schism emerged among the senior leadership of al Qaeda. Several senior members reportedly agreed with Mullah Omar . Those who reportedly sided with bin Ladin included Atef , Sulayman Abu Ghayth , and KSM . But those said to have opposed him were weighty figures in

20562-438: Was asked, "Why two 110-story buildings? Why not one 220-story building?" His tongue-in-cheek response was: "I didn't want to lose the human scale." Architectural critic Ada Louise Huxtable criticized the design of the twin towers when they were first announced, saying: "Here we have the world's daintiest architecture for the world's biggest buildings." The twin towers had more floors (at 110) than any other building before

20711-544: Was charged with criminal trespass and disorderly conduct, he was later freed in exchange for performing for children in Central Park . On February 20, 1981, an Aerolíneas Argentinas airliner was guided away by air traffic controllers after radar signals indicated it was on a collision course with the North Tower (1 WTC). The aircraft, which departed from José Joaquín de Olmedo International Airport in Guayaquil , Ecuador, and

20860-578: Was concentrated in Midtown Manhattan . To help stimulate urban renewal in Lower Manhattan, David Rockefeller suggested that the Port Authority build a World Trade Center there. Plans for the use of eminent domain to remove the shops in Radio Row bounded by Vesey , Church , Liberty , and West Streets began in 1961 when the Port Authority of New York and New Jersey was deciding to build

21009-590: Was deliberately crashed by co-pilot Gameel Al-Batouti , killing over 200 passengers. "This is how the idea of 9/11 was conceived and developed in my head, and that is when we began the planning" bin Laden continued, adding that no one but Abu Hafs and Abu al-Khair knew about it at the time. The 9/11 Commission Report identified Khalid Sheikh Mohammed as the architect of 9/11, but he is not mentioned in bin Laden's notes. The attacks were conceived by Khalid Sheikh Mohammed , who first presented it to Osama bin Laden in 1996. At that time, bin Laden and Al-Qaeda were in

21158-515: Was developed by restaurateur Joe Baum at a cost of more than $ 17 million. As well as the main restaurant, two offshoots were located at the top of the North Tower: Hors d'Oeuvrerie (offered a Danish smorgasbord during the day and sushi in the evening) and Cellar in the Sky (a small wine bar ). Windows on the World also had a wine school program run by Kevin Zraly , who published a book on

21307-407: Was heavily damaged. After the bombing, the Port Authority installed photoluminescent pathway markings in the stairwells. The fire alarm system for the entire complex needed to be replaced because critical wiring and signaling in the original system were destroyed. A memorial to the victims of the bombing, a reflecting pool , was installed with the names of those who were killed in the blast. It

21456-596: Was killed during a U.S. military raid on his compound in Abbottabad, Pakistan . The War in Afghanistan continued for another eight years until the agreement was made in February 2020 for American and NATO troops to withdraw from the country . Excluding the hijackers, the attacks killed 2,977 people, injured thousands more and gave rise to substantial long-term health consequences while also causing at least $ 10   billion in infrastructure and property damage. It remains

21605-424: Was later destroyed following the September 11 attacks. The names of the victims of the 1993 bombing are included in the National September 11 Memorial & Museum . In January 1998, a DeCavalcante crime family member Ralph Guarino gained maintenance access to the World Trade Center. He arranged a three-man crew for a heist that netted over $ 2 million from a Brinks delivery to the North Tower's 11th floor. On

21754-469: Was necessary before the excavation of material from the interior of the site could begin. The 1,200,000 cubic yards (920,000 m ) of excavated material were used (along with other fill and dredge material) to expand the Manhattan shoreline across West Street to form Battery Park City . The Port Authority awarded $ 74 million in contracts to various steel suppliers in January 1967, and excavation of

21903-508: Was scheduled to land at nearby JFK Airport , was flying at a much lower altitude than regulations recommended. The 1995 PCA world chess championship was played on the 107th floor of the South Tower. On February 8, 2000, a worker was crushed to death and another was injured by an industrial cooling unit. Slow leasing was a hallmark of the old World Trade Center complex. The Twin Towers suffered high vacancy rates for decades. The complex achieved 95% occupancy only in mid-2001. Following

22052-400: Was suggested by David Rockefeller to help stimulate urban renewal in Lower Manhattan, and his brother Nelson , then New York's 49th governor, signed the legislation to build it. The buildings at the complex were designed by Minoru Yamasaki . In 1998, the Port Authority of New York and New Jersey decided to privatize it by leasing the buildings to a private company to manage. It awarded

22201-783: Was the seat of the Holy Roman Empire and Habsburg monarchy , both major powers in Europe at the time. For Osama bin Laden, this was a date when the West gained some dominance over Islam, and by attacking on this date, he hoped to make a step in Islam "winning" the war for worldwide power and influence. In late 1999, al-Qaeda associate Walid bin Attash ("Khallad") contacted Mihdhar and told him to meet in Kuala Lumpur , Malaysia; Hazmi and Abu Bara al Yemeni would also be in attendance. The NSA intercepted

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