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Defense Information Systems Agency
The Defense Information Systems Agency (DISA), known as the Defense Communications Agency (DCA) until 1991, is a United States Department of Defense (DoD) combat support agency. It is composed of military, federal civilians, and contractors. DISA provides information technology (IT) and communications support to the President, Vice President, Secretary of Defense, the Department of Defense, the combatant commands, and any individual or system contributing to the defense of the United States. History 1960s: The Defense Communications Agency DCA was established May 12, 1960, with the primary mission of operational control and management of the Defense Communications System (DCS). The initial headquarters for 34 DCA members was Wake Hall, one of a complex of three buildings (which included Midway Hall and Guam Hall) on the site where the parking lot of the Robert F. Kennedy Stadium in Washington, D.C., stands today. Navy Rear Admiral William D. Irvin became the first DCA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fort George G
A fortification (also called a fort, fortress, fastness, or stronghold) is a military construction designed for the defense of territories in warfare, and is used to establish rule in a region during peacetime. The term is derived from Latin ("strong") and ("to make"). From very early history to modern times, defensive walls have often been necessary for cities to survive in an ever-changing world of invasion and conquest. Some settlements in the Indus Valley Civilization were the first small cities to be fortified. In ancient Greece, large cyclopean stone walls fitted without mortar had been built in Mycenaean Greece, such as the ancient site of Mycenae. A Greek '' phrourion'' was a fortified collection of buildings used as a military garrison, and is the equivalent of the Roman castellum or fortress. These constructions mainly served the purpose of a watch tower, to guard certain roads, passes, and borders. Though smaller than a real fortress, they acted as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Force Ballistic Missile Division
An atmosphere () is a layer of gases that envelop an astronomical object, held in place by the gravity of the object. A planet retains an atmosphere when the gravity is great and the temperature of the atmosphere is low. A stellar atmosphere is the outer region of a star, which includes the layers above the opacity (optics), opaque photosphere; stars of low temperature might have outer atmospheres containing compound molecules. The atmosphere of Earth is composed of nitrogen (78%), oxygen (21%), argon (0.9%), Carbon dioxide in Earth's atmosphere, carbon dioxide (0.04%) and trace gases. Most organisms use oxygen for respiration (physiology), respiration; lightning and bacteria perform nitrogen fixation which produces ammonia that is used to make nucleotides and amino acids; plants, algae, and cyanobacteria use carbon dioxide for photosynthesis. The layered composition of the atmosphere minimises the harmful effects of sunlight, ultraviolet radiation, solar wind, and cosmic rays ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Falls Church
Falls Church City is an independent city in the Commonwealth of Virginia, United States. As of the 2020 census, the population was 14,658. Falls Church is part of both Northern Virginia and the Washington metropolitan area. As of 2020, it has a median household income of $146,922, the second-highest household income of any county in the nation behind Loudoun County, Virginia. Taking its name from the Falls Church, an 18th-century Church of England, later the Episcopal Church, Falls Church gained township status within Fairfax County in 1875. In 1948, it seceded from Fairfax County and was incorporated as the City of Falls Church, an independent city with county-level governance status although it is not nominally a county. The city's corporate boundaries do not include all of the area historically known as Falls Church; these areas include portions of Seven Corners and other portions of the current Falls Church postal districts in Fairfax County and Arlington County, kn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Base Realignment And Closure
Base Realignment and Closure (BRAC) was a process by a Federal government of the United States, United States federal government commission to increase the efficiency of the United States Department of Defense by coordinating the realignment and closure of List of American military installations, military installations following the end of the Cold War. Over 350 installations have been closed in five BRAC rounds: 1988, 1991, 1993, 1995, and 2005. These five BRAC rounds constitute a combined savings of $12 billion annually. Background The Federal Property and Administrative Services Act of 1949, passed after the 1947 reorganization of the National Military Establishment, reduced the number of U.S. military bases, forts, posts, and stations. The subsequent 1950s buildup for the Cold War (e.g., during the Korean War) resulted in large numbers of new installations, such as the Permanent System radar stations and Semi-Automatic Ground Environment (SAGE) NORAD Control Center, control ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Cyber Command
United States Cyber Command (USCYBERCOM) is one of the eleven unified combatant commands of the United States Department of Defense (DoD). It unifies the direction of cyberspace operations, strengthens DoD cyberspace capabilities, and integrates and bolsters DoD's cyber expertise which focus on securing cyberspace. USCYBERCOM was established as a Sub-Unified command under U.S. Strategic Command at the direction of Secretary of Defense Robert Gates on 23 June 2009 at the National Security Agency (NSA) headquarters in Fort George G. Meade, Maryland. It cooperates with NSA networks and has been concurrently headed by the director of the National Security Agency since its inception. While originally created with a defensive mission in mind, it has increasingly been viewed as an offensive force. On 18 August 2017, it was announced that USCYBERCOM would be elevated to the status of a full and independent unified combatant command. On 23 May 2023, it was announced that Presiden ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Global Information Grid
The Global Information Grid (GIG), now referred to as the Department of Defense Information Network (DODIN), refers to the entire network of information transmission and processing capabilities maintained by the United States Department of Defense. It is a worldwide network of information transmission, of associated processes, and of personnel serving to collect, process, safeguard, transmit, and manage this information. It is an all-encompassing communications project of the United States Department of Defense. The GIG makes this immediately available to military personnel, to those responsible for military politics, and for support personnel. It includes all infrastructure, bought or loaned, of communications, electronics, informatics (including software and databases), and security. It is the most visible manifestation of network-centric warfare. It is the combination of technology and human activity that enables warfighters to access information on demand. It is defined as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desert Storm
, combatant2 = , commander1 = , commander2 = , strength1 = Over 950,000 soldiers3,113 tanks1,800 aircraft2,200 artillery systems , page = https://www.govinfo.gov/content/pkg/GAOREPORTS-PEMD-96-10/pdf/GAOREPORTS-PEMD-96-10.pdf , strength2 = 1,000,000+ soldiers (~600,000 in Kuwait)5,500 tanks700+ aircraft3,000 artillery systems , casualties1 = Total:13,488 Coalition:292 killed (147 killed by enemy action, 145 non-hostile deaths)776 wounded (467 wounded in action)31 tanks destroyed/disabled28 Bradley IFVs destroyed/damaged1 M113 APC destroyed2 British Warrior APCs destroyed1 artillery piece destroyed75 aircraft destroyedKuwait:420 killed 12,000 captured ≈200 tanks destroyed/captured 850+ other armored vehicles destroyed/captured 57 aircraft lost 8 aircraft captured (Mirage F1s) 17 ships sunk, 6 captured. Acig.org. Retrieved on 12 June 2011 , casualties2 = Total:175,000–300,000+ Iraqi:20,000–50,000 killed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minimum Essential Emergency Communications Network
The Minimum Essential Emergency Communications Network (MEECN) is a network of systems providing uninterrupted communications throughout the pre-, trans-, and post-nuclear warfare environment. At minimum, MEECN is designed to provide a one-way flow of information to activate nuclear forces during severe jamming and a post-nuclear environment. Components As of 1994, MEECN consists of various programs: Miniature Receive Terminals (MRTs) for nuclear bombers, High Power Transmit Sets (HPTS) for E-4B aircraft, Dual Frequency MEECN receivers (DFMRs) for ICBM Launch Control Centers. Ground Element MEECN System (GEMS) The GEMS program, short for Ground Element Minimum Essential Emergency Communications Network, is intended to replace deprecated communications facilities. This system features improved infrastructure for alerting aircrew, and maintaining communications in the event of nuclear conflict. Notable elements include updated Extremely High Frequency (EHF) communications satellites ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cold War
The Cold War was a period of global Geopolitics, geopolitical rivalry between the United States (US) and the Soviet Union (USSR) and their respective allies, the capitalist Western Bloc and communist Eastern Bloc, which lasted from 1947 until the dissolution of the Soviet Union in 1991. The term ''Cold war (term), cold war'' is used because there was no direct fighting between the two superpowers, though each supported opposing sides in regional conflicts known as proxy wars. In addition to the struggle for ideological and economic influence and an arms race in both conventional and Nuclear arms race, nuclear weapons, the Cold War was expressed through technological rivalries such as the Space Race, espionage, propaganda campaigns, Economic sanctions, embargoes, and sports diplomacy. After the end of World War II in 1945, during which the US and USSR had been allies, the USSR installed satellite state, satellite governments in its occupied territories in Eastern Europe and N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Worldwide Military Command And Control System
The Worldwide Military Command and Control System, or WWMCCS , was a military command and control system implemented for the United States Department of Defense. It was created in the days following the Cuban Missile Crisis. WWMCCS was a complex of systems that encompassed the elements of warning, communications, data collection and processing, executive decision-making tools and supporting facilities. It was decommissioned in 1996 and replaced by the Global Command and Control System. Background The worldwide deployment of U.S. forces required extensive long-range communications systems that can maintain contact with all of those forces at all times. To enable national command authorities to exercise effective command and control of their widely dispersed forces, a communications system was established to enable those authorities to disseminate their decisions to all subordinate units, under any conditions, within minutes. Such a command and control system, WWMCCS, was creat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moscow–Washington Hotline
The Moscow–Washington hotline (formally known in the United States as the Washington–Moscow Direct Communications Link; ) is a system that allows direct communication between the leaders of the United States and the Russia, Russian Federation (formerly the Soviet Union). This hotline was established in 1963 and links the Pentagon with the Moscow Kremlin, Kremlin (historically, with Communist Party of the Soviet Union, Soviet Communist Party leadership across the square from the Kremlin itself). Although in popular culture it is known as the "red telephone", the hotline was never a telephone line, and no red phones were used. The first implementation used Teleprinter, Teletype equipment, and shifted to Fax, fax machines in 1986. Since 2008, the Moscow–Washington hotline has been a secure computer link over which messages are exchanged by a secure form of email. Origins Background Several people came up with the idea for a hotline, including Harvard professor Thomas Schelling, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
