80-522: The Initial Defense Communications Satellite Program or IDCSP was the first United States Department of Defense communications satellite constellation and the first stage of the Defense Communications Satellite Program (DCSP). Launched in five groups by Titan IIIC launch vehicles to near equatorial, subsynchronous orbits between 1966 and 1968, they were intended to be experimental testbeds. They were so successful that, by
160-639: A Unified Command Plan —a frequently updated document (produced by the DoD), which lays out the Command's mission, geographical/functional responsibilities, and force structure. During military operations, the chain of command runs from the president to the secretary of defense to the combatant commanders of the Combatant Commands. As of 2019 , the United States has eleven Combatant Commands, organized either on
240-546: A light bulb with a power rating of 100 W is turned on for one hour, the energy used is 100 watt hours (W·h), 0.1 kilowatt hour, or 360 kJ . This same amount of energy would light a 40-watt bulb for 2.5 hours, or a 50-watt bulb for 2 hours. Power stations are rated using units of power, typically megawatts or gigawatts (for example, the Three Gorges Dam in China is rated at approximately 22 gigawatts). This reflects
320-427: A $ 106 billion subtotal (the so-called "fourth estate" agencies such as missile defense, and defense intelligence, amounting to 16% of the defense budget), He will re-deploy to the modernization of hypersonics, artificial intelligence, and missile defense. Beyond 2021 the 27th secretary of defense is projecting the need for yearly budget increases of 3 to 5 percent to modernize. The Department of Defense accounts for
400-665: A centralized research authority, the Advanced Research Projects Agency , eventually known as DARPA . The act was written and promoted by the Eisenhower administration and was signed into law on August 6, 1958. The Secretary of Defense , appointed by the president with the advice and consent of the Senate , is by federal law ( 10 U.S.C. § 113 ) the head of the Department of Defense, "the principal assistant to
480-447: A geographical basis (known as " area of responsibility ", AOR) or on a global, functional basis: Department of Defense spending in 2017 was 3.15% of GDP and accounted for about 38% of the budgeted global military spending – more than the next 7 largest militaries combined. By 2019, the 27th secretary of defense had begun a line-by-line review of the defense budget; in 2020 the secretary identified items amounting to $ 5.7 billion, out of
560-676: A single Titan IIIC rocket into slightly subsynchronous orbit. Once there, the satellites would be deployed one at a time over the course of three minutes from the Transtage of the Titan. The satellites would drift randomly at an average rate of 28.5° per day becoming a roughly evenly spaced belt of satellites above the Earth's equator. In this way, at least one satellite of the constellation would always be visible to an Earth station if one failed. Full coverage would be provided by at least 12 satellites. Thus,
640-803: A single 3.5 Watt X-band or SHF transponder receiving at 8.025 GHz and transmitting 7.25–7.3 GHz (similar to the Lincoln Experimental Satellites procured around the same time) capable of concurrently supporting 600 voice or 6000 teletype conversations. Complementing these satellites were ground communications terminals used to transmit and receive via IDCSP satellite voice, imagery, computerized digital data, and teletype channel using Frequency-division multiplexing / Frequency Modulation (FDM/FM), Differential Phase Shift Keying (DPSK), Multiple frequency-shift keying (MFSK), and Spread Spectrum Multiple Access (SSMA) modulation techniques. The Eimac Division of Varian Associates supplied one of
720-487: A total cost of $ 165 million ($ 60 million of which would be spent on satellites). Philco 's Western Development Division was originally selected by the United States Air Force (USAF) to build the satellites. However, by 1964, the development of the much more powerful Titan IIIC booster made it possible for fewer IDCSP satellites to fulfill the same mission at a higher altitude. Four to eight could be launched on
800-535: A turbine, which generates 648 MW e (i.e. electricity). Other SI prefixes are sometimes used, for example gigawatt electrical (GW e ). The International Bureau of Weights and Measures , which maintains the SI-standard, states that further information about a quantity should not be attached to the unit symbol but instead to the quantity symbol (e.g., P th = 270 W rather than P = 270 W th ) and so these unit symbols are non-SI. In compliance with SI,
880-486: A unit of time, namely 1 J/s. In this new definition, 1 absolute watt = 1.00019 international watts. Texts written before 1948 are likely to be using the international watt, which implies caution when comparing numerical values from this period with the post-1948 watt. In 1960, the 11th General Conference on Weights and Measures adopted the absolute watt into the International System of Units (SI) as
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#1733085923058960-513: Is a military command composed of personnel/equipment from at least two Military Departments, which has a broad/continuing mission. These military departments are responsible for equipping and training troops to fight, while the Unified Combatant Commands are responsible for military forces' actual operational command. Almost all operational U.S. forces are under the authority of a Unified Command. The Unified Commands are governed by
1040-746: Is a parent agency of the following defense agencies: Several defense agencies are members of the United States Intelligence Community . These are national-level intelligence services that operate under the Department of Defense jurisdiction but simultaneously fall under the authorities of the Office of the Director of National Intelligence . They fulfill the requirements of national policymakers and war planners, serve as Combat Support Agencies , and also assist and deploy alongside non-Department of Defense intelligence or law enforcement services such as
1120-607: Is alleged to be due to the Establishment's abbreviation, NME, being pronounced "enemy". Under the Department of Defense Reorganization Act of 1958 ( Pub. L. 85–599 ), channels of authority within the department were streamlined while still maintaining the ordinary jurisdiction of the Military Departments to organize, train, and equip their associated forces. The Act clarified the overall decision-making authority of
1200-467: Is an executive branch department of the federal government of the United States charged with coordinating and supervising all agencies and functions of the U.S. government directly related to national security and the United States Armed Forces . As of November 2022, the U.S. Department of Defense is the second largest employer in the world after India (and potentially China, if including
1280-494: Is in the Department of Energy budget, Veterans Affairs, the Treasury Department's payments in pensions to military retirees and widows and their families, interest on debt incurred in past wars, or State Department financing of foreign arms sales and militarily-related development assistance. Neither does it include defense spending that is not military, such as the Department of Homeland Security, counter-terrorism spending by
1360-700: Is named after the Scottish inventor James Watt . The unit name was proposed by C. William Siemens in August 1882 in his President's Address to the Fifty-Second Congress of the British Association for the Advancement of Science . Noting that units in the practical system of units were named after leading physicists, Siemens proposed that watt might be an appropriate name for a unit of power. Siemens defined
1440-523: Is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potential difference of one volt (V), meaning the watt is equivalent to the volt-ampere (the latter unit, however, is used for a different quantity from the real power of an electrical circuit). 1 W = 1 V ⋅ A . {\displaystyle \mathrm {1~W=1~V{\cdot }A} .} Two additional unit conversions for watt can be found using
1520-613: The Central Intelligence Agency and the Federal Bureau of Investigation . The military services each have their intelligence elements that are distinct from but subject to coordination by national intelligence agencies under the Department of Defense. Department of Defense manages the nation's coordinating authorities and assets in disciplines of signals intelligence , geospatial intelligence , and measurement and signature intelligence , and also builds, launches, and operates
1600-536: The Defense Communications Satellite Program (DCSP) commissioned by United States Secretary of Defense Robert McNamara in 1962. Under the DCSP, several increasingly sophisticated satellite series would test and provide long-range communications between "fixed, transportable or shipboard terminals". Development of these series would be managed by the Defense Communications Agency (DCA). This decision came on
1680-846: The Department of the Army , the Department of the Navy , and the Department of the Air Force . In addition, four national intelligence services are subordinate to the Department of Defense: the Defense Intelligence Agency ( DIA ), the National Security Agency ( NSA ), the National Geospatial-Intelligence Agency ( NGA ), and the National Reconnaissance Office ( NRO ). Other Defense agencies include
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#17330859230581760-811: The Newcomen engine with his own steam engine in 1776. Watt's invention was fundamental for the Industrial Revolution . When an object's velocity is held constant at one meter per second against a constant opposing force of one newton , the rate at which work is done is one watt. 1 W = 1 J / s = 1 N ⋅ m / s = 1 k g ⋅ m 2 ⋅ s − 3 . {\displaystyle \mathrm {1~W=1~J{/}s=1~N{\cdot }m{/}s=1~kg{\cdot }m^{2}{\cdot }s^{-3}} .} In terms of electromagnetism , one watt
1840-759: The Thirteen Colonies and the British government , one of the first actions taken by the First Continental Congress in September 1774 was to recommend that the colonies begin defensive military preparations. In mid-June 1775, after the outbreak of the Revolutionary War , the Second Continental Congress , recognizing the necessity of having a national army that could move about and fight beyond
1920-595: The commanders of the Combatant Commands . Goldwater–Nichols also created the office of vice-chairman, and the chairman is now designated as the principal military adviser to the secretary of defense, the Homeland Security Council, the National Security Council and to the president. The Joint Staff (JS) is a headquarters staff at the Pentagon made up of personnel from all five services that assist
2000-511: The fiscal year 2024 (FY2024) presidential budget request was $ 842 billion. In January 2023 Treasury Secretary Janet Yellen announced the US government would hit its $ 31.4 trillion debt ceiling on 19 January 2023; the date on which the US government would no longer be able to use extraordinary measures such as issuance of Treasury securities is estimated to be in June 2023. On 3 June 2023,
2080-676: The Army , Commandant of the Marine Corps , Chief of Naval Operations , Chief of Staff of the Air Force , and Chief of Space Operations ) over forces not assigned to a Combatant Command . Secretaries of Military Departments and service chiefs do not possess operational command authority over U.S. troops (this power was stripped from them in the Defense Reorganization Act of 1958 ), and instead, Military Departments are tasked solely with "the training, provision of equipment, and administration of troops." A unified combatant command
2160-693: The Army , Secretary of the Navy , and Secretary of the Air Force . Following the Goldwater–Nichols Act in 1986, the Joint Chiefs of Staff no longer maintained operational command authority individually or collectively. The act designated the Chairman of the Joint Chiefs of Staff (CJCS) as the "principal military adviser to the President, the National Security Council, the Homeland Security Council, and
2240-604: The Central Military Commission), with over 1.4 million active-duty service personnel, including soldiers, marines, sailors, airmen, and guardians. The Department of Defense also maintains over 778,000 National Guard and reservists, and over 747,000 civilians, bringing the total to over 2.91 million employees. Headquartered at the Pentagon in Arlington County, Virginia , just outside Washington, D.C. ,
2320-921: The Defense Advanced Research Projects Agency ( DARPA ), the Defense Logistics Agency ( DLA ), the Missile Defense Agency ( MDA ), the Defense Health Agency ( DHA ), Defense Threat Reduction Agency ( DTRA ), the Defense Counterintelligence and Security Agency ( DCSA ), the Space Development Agency ( SDA ) and the Pentagon Force Protection Agency ( PFPA ), all of which are subordinate to the secretary of defense. Additionally,
2400-600: The Defense Contract Management Agency ( DCMA ) is responsible for administering contracts for the Department of Defense. Military operations are managed by eleven regional or functional unified combatant commands . The Department of Defense also operates several joint services schools, including the Eisenhower School (ES) and the National War College (NWC). Faced with rising tensions between
2480-640: The Department of Defense are in Title 10 of the United States Code . Other significant legislation related to the Department of Defense includes: Watt The watt (symbol: W ) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m ⋅s . It is used to quantify the rate of energy transfer . The watt is named in honor of James Watt (1736–1819), an 18th-century Scottish inventor , mechanical engineer , and chemist who improved
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2560-483: The Department of Defense is approximately $ 686,074,048,000 (Including Base + Overseas Contingency Operations + Emergency Funds) in discretionary spending and $ 8,992,000,000 in mandatory spending totaling $ 695,066,000,000 Undersecretary of Defense (Comptroller) David L. Norquist said in a hearing regarding the FY 2019 budget: "The overall number you often hear is $ 716 billion. That is the amount of funding for national defense,
2640-537: The Department of Defense who advise the secretary of defense, the Homeland Security Council , the National Security Council and the president on military matters. The composition of the Joint Chiefs of Staff is defined by statute and consists of the chairman of the Joint Chiefs of Staff (CJCS), vice chairman of the Joint Chiefs of Staff (VCJCS), senior enlisted advisor to the chairman (SEAC),
2720-521: The Department of Defense's stated mission is "to provide the military forces needed to deter war and ensure our nation's security". The Department of Defense is headed by the secretary of defense , a cabinet-level head who reports directly to the president of the United States , the latter of which is also the commander-in-chief of the United States Armed Forces . Beneath the Department of Defense are three subordinate military departments:
2800-629: The FBI, and intelligence-gathering spending by the NSA. In the 2010 United States federal budget , the Department of Defense was allocated a base budget of $ 533.7 billion, with a further $ 75.5 billion adjustment in respect of 2009, and $ 130 billion for overseas contingencies. The subsequent 2010 Department of Defense Financial Report shows the total budgetary resources for fiscal year 2010 were $ 1.2 trillion. Of these resources, $ 1.1 trillion were obligated and $ 994 billion were disbursed, with
2880-629: The IDCSP satellites did not work reliably, and many satellites operated long past their six-year lifespan. As of 1975, six were still functioning. Technical and systems management assistance was provided to the USAF's Space Systems Division by The Aerospace Corporation . The IDCSP series was succeeded by the NATO-2 and DSCS-2 true geosynchronous satellites. United States Department of Defense The United States Department of Defense ( DoD , USDOD , or DOD )
2960-568: The IDCSP spacecraft were identical communications satellites , spin-stabilized, 26-sided polygons, 86 cm (34 in) in diameter, covered with solar panels, and had a mass of 45 kilograms (99 lb). They were specifically designed to be simple to avoid the problems faced by the earlier Courier and Advent programs: no in-orbit control mechanisms were included, nor were the satellites equipped with batteries. The satellites were equipped with an automatic radiation shut-off device to deactivate them after six years in orbit. Each satellite contained
3040-725: The Initial Defense Satellite Communications System (IDSCS). This system afforded the American military a secure system for sensitive command-and-control communications, the more routine administrative and logistical messages being relayed via commercial satellites. The IDCSP constellation was also used by North Atlantic Treaty Organization states, which referred to the program as NATO-1. In all, 35 IDCSP satellites were launched in 5 groups by Titan IIIC launch vehicles, 27 successfully to near equatorial, subsynchronous orbits. The automatic shut-off device installed on
3120-587: The Intelligence Community's satellite assets. Department of Defense also has its own human intelligence service , which contributes to the CIA's human intelligence efforts while also focusing on military human intelligence priorities. These agencies are directly overseen by the Under Secretary of Defense for Intelligence and Security . The Joint Chiefs of Staff (JCS) is a body of senior uniformed leaders in
3200-565: The Military Service chiefs from the Army , Marine Corps , Navy , Air Force , and Space Force , in addition to the chief of National Guard Bureau , all appointed by the president following U.S. Senate confirmation. Each of the individual Military Service Chiefs, outside their Joint Chiefs of Staff obligations, works directly for the secretary of the military department concerned: the Secretary of
3280-584: The NDAA on 14 December 2023. The Senate will next undertake negotiations on supplemental spending for 2024. A government shutdown was averted on 23 March 2024 with the signing of a $ 1.2 trillion bill to cover FY2024. A 2013 Reuters investigation concluded that Defense Finance & Accounting Service , the Department of Defense's primary financial management arm, implements monthly "unsubstantiated change actions"—illegal, inaccurate "plugs"—that forcibly make DoD's books match Treasury's books. Reuters reported that
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3360-532: The Navy (DON) & Department of the Air Force (DAF)), the Defense Agencies and Department of Defense Field Activities , the National Guard Bureau (NGB), and such other offices, agencies, activities, organizations, and commands established or designated by law, or by the president or by the secretary of defense. Department of Defense Directive 5100.01 describes the organizational relationships within
3440-416: The Pentagon was the only federal agency that had not released annual audits as required by a 1992 law. According to Reuters, the Pentagon "annually reports to Congress that its books are in such disarray that an audit is impossible". In 2015, a Pentagon consulting firm performed an audit on the Department of Defense's budget. It found that there was $ 125 billion in wasteful spending that could be saved over
3520-558: The President in all matters relating to Department of Defense", and has "authority, direction, and control over the Department of Defense". Because the Constitution vests all military authority in Congress and the president, the statutory authority of the secretary of defense is derived from their constitutional authority. Since it is impractical for either Congress or the president to participate in every piece of Department of Defense affairs,
3600-478: The Secretary of Defense in the exercise of policy development, planning, resource management, fiscal and program evaluation and oversight, and interface and exchange with other U.S. federal government departments and agencies, foreign governments, and international organizations, through formal and informal processes. OSD also performs oversight and management of the Defense Agencies, Department of Defense Field Activities, and specialized Cross Functional Teams . OSD
3680-403: The Secretary of Defense". The remaining Joint Chiefs of Staff may only have their advice relayed to the President, National Security Council, the Homeland Security Council , or the Secretary of Defense after submitting it to the CJCS. By law, the chairman has to present that advice whenever he is presenting his own. The chain of command goes from the president to the secretary of defense to
3760-448: The Secretary of Defense. After the end of World War II , President Harry Truman proposed the creation of a unified department of national defense. In a special message to the Congress on December 19, 1945, the president cited wasteful military spending and interdepartmental conflicts. Deliberations in Congress went on for months focusing heavily on the role of the military in society and the threat of granting too much military power to
3840-433: The Titan IIIC was chosen to replace the Atlas Agena as the IDCSP launch vehicle. This change did not go unchallenged; the House Committee on Government Operations denounced the move, saying that the "plan for short-range economies depending on a high-risk program may prove costly in the end". With the selection of the Titan IIIC as the IDCSP booster, the Pentagon dropped contract negotiations with Philco, preferring to develop
3920-423: The above equation and Ohm's law . 1 W = 1 V 2 / Ω = 1 A 2 ⋅ Ω , {\displaystyle \mathrm {1~W=1~V^{2}/\Omega =1~A^{2}{\cdot }\Omega } ,} where ohm ( Ω {\displaystyle \Omega } ) is the SI derived unit of electrical resistance . The watt
4000-428: The accounting code is 050 and includes more than simply the Department of Defense. It includes, for example, the Department of Energy and others. That large a number, if you back out the $ 30 billion for non-defense agencies, you get to $ 686 billion. That is the funding for the Department of Defense, split between $ 617 billion in base and $ 69 billion in overseas contingency ". The Department of Defense budget encompasses
4080-428: The annual federal expenditures in the United States federal budget discretionary budget . On September 28, 2018, President Donald Trump signed the Department of Defense and Labor, Health and Human Services, and Education Appropriations Act, 2019, and Continuing Appropriations Act, 2019 (H.R.6157) into law. On September 30, 2018, the FY2018 Budget expired and the FY2019 budget came into effect. The FY2019 Budget for
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#17330859230584160-469: The boundaries of any particular colony, organized the Continental Army on June 14, 1775. This momentous event is commemorated in the U.S. annually as Flag Day . Later that year, Congress would charter the Continental Navy on October 13, and the Continental Marines on November 10. Upon the seating of the 1st U.S. Congress on March 4, 1789, legislation to create a military defense force stagnated as they focused on other concerns relevant to setting up
4240-406: The chairman and vice chairman in discharging their duties. It is managed by the Director of the Joint Staff (DJS) who is a lieutenant general or vice admiral . There are three military departments within the Department of Defense: The Military Departments are each headed by their secretary (i.e., Secretary of the Army , Secretary of the Navy and Secretary of the Air Force ), appointed by
4320-418: The comparative simplicity of the IDCSP constellation satellites, under Project Compass Link, the satellites made it possible for high-resolution photography to be transferred between the South Vietnamese capital and Washington, D.C. , allowing near-real-time battlefield analysis. With the launch of the fourth system of eight satellites on 13 June 1968, DCA deemed the experimental system operational, renaming it
4400-434: The control of a single secretary of defense . The National Military Establishment formally began operations on September 18, the day after the Senate confirmed James V. Forrestal as the first secretary of defense. The National Military Establishment was renamed the "Department of Defense" on August 10, 1949, and absorbed the three cabinet-level military departments, in an amendment to the original 1947 law. The renaming
4480-440: The debt ceiling was suspended until 2025. The $ 886 billion National Defense Authorization Act is facing reconciliation of the House and Senate bills after passing both houses 27 July 2023; the conferees have to be chosen, next. As of September 2023, a Continuing resolution is needed to prevent a Government shutdown . A shutdown was avoided on 30 September for 45 days (until 17 November 2023), with passage of
4560-401: The department and is the foundational issuance for delineating the major functions of the department. The latest version, signed by former Secretary of Defense Robert Gates in December 2010, is the first major re-write since 1987. The Office of the Secretary of Defense ( OSD ) is the secretary and their deputies, including predominantly civilian staff. OSD is the principal staff element of
4640-515: The energy company Ørsted A/S uses the unit megawatt for produced electrical power and the equivalent unit megajoule per second for delivered heating power in a combined heat and power station such as Avedøre Power Station . When describing alternating current (AC) electricity, another distinction is made between the watt and the volt-ampere . While these units are equivalent for simple resistive circuits , they differ when loads exhibit electrical reactance . Radio stations usually report
4720-403: The executive. On July 26, 1947, Truman signed the National Security Act of 1947 , which set up a unified military command known as the National Military Establishment and created the Central Intelligence Agency , the National Security Council , National Security Resources Board , United States Air Force , and the Joint Chiefs of Staff . The act placed the National Military Establishment under
4800-570: The fourth Titan IIIC. After a successful Transtage burn placed the last stage of the Titan into a 33,670 km (20,920 mi) by 33,892 km (21,060 mi) orbit, the first seven IDCSP satellites (along with the Gravity Gradient Technology Satellite , a stabilization test satellite built on the same satellite bus ) were dispersed one-by-one into orbit, each drifting 27.8° per day. Communications were conducted successfully between Fort Dix , New Jersey, and sites in California, England and Germany. The second set of IDCSP satellites, totaling eight,
4880-464: The heels of the cancellation of Project ADVENT, the first attempt at a military geosynchronous communications satellite system, begun February 1960. Originally costed at $ 140 million to develop, $ 170 million had been spent by 1962, and the estimated total cost had reached $ 325 million. The cheaper, "interim" IDCSP was chosen to replace ADVENT. It would use a constellation of 24-30 satellites launched into Medium Earth Orbit via ten Atlas Agena rockets for
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#17330859230584960-404: The jurisdiction of other congressional committees. The Department of Defense is unique because it is one of the few federal entities where the majority of its funding falls into the discretionary category. The majority of the entire federal budget is mandatory, and much of the discretionary funding in the budget consists of DoD dollars. * Numbers may not add due to rounding As of 10 March 2023
5040-447: The latest Center for Effective Government analysis of 15 federal agencies which receive the most Freedom of Information Act requests, published in 2015 (using 2012 and 2013 data, the most recent years available), the DoD earned 61 out of a possible 100 points, a D− grade. While it had improved from a failing grade in 2013, it still had low scores in processing requests (55%) and disclosure rules (42%). The organization and functions of
5120-452: The majority of federal discretionary spending. In FY 2017, the Department of Defense budgeted spending accounted for 15% of the U.S. federal budget, and 49% of federal discretionary spending , which represents funds not accounted for by pre-existing obligations. However, this does not include many military-related items that are outside the Department of Defense budget, such as nuclear weapons research, maintenance, cleanup, and production, which
5200-438: The majority of the National Defense Budget of approximately $ 716.0 billion in discretionary spending and $ 10.8 billion in mandatory spending for a $ 726.8 billion total. Of the total, $ 708.1 billion falls under the jurisdiction of the House Committee on Armed Services and Senate Armed Services Committee and is subject to authorization by the annual National Defense Authorization Act (NDAA). The remaining $ 7.9 billion falls under
5280-460: The maximum power output it can achieve at any point in time. A power station's annual energy output, however, would be recorded using units of energy (not power), typically gigawatt hours. Major energy production or consumption is often expressed as terawatt hours for a given period; often a calendar year or financial year. One terawatt hour of energy is equal to a sustained power delivery of one terawatt for one hour, or approximately 114 megawatts for
5360-500: The new government. President George Washington went to Congress to remind them of their duty to establish a military twice during this time. Finally, on the last day of the session, September 29, 1789, Congress created the War Department . The War Department handled naval affairs until Congress created the Navy Department in 1798. The secretaries of each department reported directly to the president as cabinet-level advisors until 1949, when all military departments became subordinate to
5440-579: The next five years without layoffs or reduction in military personnel. In 2016, The Washington Post uncovered that rather than taking the advice of the auditing firm, senior defense officials suppressed and hid the report from the public to avoid political scrutiny. In June 2016, the Office of the Inspector General released a report stating that the Army made $ 6.5 trillion in wrongful adjustments to its accounting entries in 2015. The Department of Defense failed its fifth audit in 2022, and could not account for more than 60% of its $ 3.5 trillion in assets. In
5520-488: The power of their transmitters in units of watts, referring to the effective radiated power . This refers to the power that a half-wave dipole antenna would need to radiate to match the intensity of the transmitter's main lobe . The terms power and energy are closely related but distinct physical quantities. Power is the rate at which energy is generated or consumed and hence is measured in units (e.g. watts) that represent energy per unit time . For example, when
5600-580: The president, with the advice and consent of the Senate . They have the legal authority under Title 10 of the United States Code to conduct all the affairs of their respective departments within which the military services are organized. The secretaries of the Military Departments are (by law) subordinate to the secretary of defense and (by SecDef delegation) to the deputy secretary of defense . Secretaries of military departments, in turn, normally exercise authority over their forces by delegation through their respective service chiefs (i.e., Chief of Staff of
5680-463: The remaining resources relating to multi-year modernization projects requiring additional time to procure. After over a decade of non-compliance , Congress has established a deadline of Fiscal year 2017 for the Department of Defense to achieve audit readiness . In 2015 the allocation for the Department of Defense was $ 585 billion, the highest level of budgetary resources among all federal agencies, and this amounts to more than one-half of
5760-562: The satellites in-house. Through early 1965 the satellites were still being designed so that they could be lofted to Medium Earth Orbit via Atlas Agena in the event that the Titan IIIC was not available. The Titan IIIC was developed in time for use, the first launch taking place just four months behind the original schedule. The satellites built by 1966, sufficient for three launches, had cost just $ 33 million to produce (an overage of $ 3 million on original estimates). Developed primarily by TRW ,
5840-674: The secretary of defense and the secretary's subordinate officials generally exercise military authority. The Department of Defense is composed of the Office of the Secretary of Defense ( OSD ), the Joint Chiefs of Staff ( JCS ) and the Joint Staff ( JS ), Office of the Inspector General ( DODIG ), the Combatant Commands , the Military Departments ( Department of the Army (DA), Department of
5920-473: The secretary of defense concerning these subordinate Military Departments. It more clearly defined the operational chain of command over U.S. military forces (created by the military departments) as running from the President to the Secretary of Defense, the service chief of the Unified Combatant Commander(s), and then to the unified combatant commander(s). Also provided in this legislation was
6000-470: The time of the launch of the last set of eight satellites, the IDCSP was deemed operational and renamed Initial Defense Satellite Communications System or IDSCS . This system allowed real-time collection of battlefield intelligence during the Vietnam War . A total of 35 IDCSP satellites were launched, 27 successfully. The Initial Defense Communications Satellite Program or IDCSP was the first stage in
6080-403: The two traveling wave amplifiers used by the satellite's transmitter, the other being produced by Watkins-Johnson Company . Because of the low power of the satellites' transponders, as well as its low-gain antenna, the receiving installations had to be very large. The first launch of IDCSP satellites took place at 14:00:01 GMT on 16 June 1966 from Cape Canaveral Space Launch Complex 41 aboard
6160-559: The unit of power. In the electric power industry , megawatt electrical ( MWe or MW e ) refers by convention to the electric power produced by a generator, while megawatt thermal or thermal megawatt (MWt, MW t , or MWth, MW th ) refers to thermal power produced by the plant. For example, the Embalse nuclear power plant in Argentina uses a fission reactor to generate 2,109 MW t (i.e. heat), which creates steam to drive
6240-556: The unit within the existing system of practical units as "the power conveyed by a current of an Ampère through the difference of potential of a Volt". In October 1908, at the International Conference on Electric Units and Standards in London, so-called international definitions were established for practical electrical units. Siemens' definition was adopted as the international watt. (Also used: 1 A × 1 Ω.) The watt
6320-420: Was defined as equal to 10 units of power in the practical system of units. The "international units" were dominant from 1909 until 1948. After the 9th General Conference on Weights and Measures in 1948, the international watt was redefined from practical units to absolute units (i.e., using only length, mass, and time). Concretely, this meant that 1 watt was defined as the quantity of energy transferred in
6400-547: Was lost 26 August 1966 when a faulty payload fairing caused the launch failure of the fifth Titan IIIC. This proved to be the last unsuccessful Titan IIIC launch. On 18 January 1967, the seventh Titan IIIC launch successfully placed a full constellation of eight IDCSP satellites into orbit, and on 1 July 1967, four more IDCSP satellites (including IDCSP 19, also known as DATS (Despun Antenna Test Satellite)) were put into orbit. IDCSP ground terminals had been installed at American bases at Saigon and Nha Trang by that time. Despite
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