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Air Defense, Tactical Air Command (ADTAC) was a Named Unit of the United States Air Force, and operated at the Numbered Air Force echelon of Tactical Air Command. It was responsible for the air defense of the United States, and was last stationed at Langley Air Force Base, Virginia. It was last assigned to Tactical Air Command, and was inactivated on 6 December 1985. ADTAC was established when the Aerospace Defense Command (ADCOM) was inactivated as a Major Command on 1 October 1979. Aerospace Defense Command's atmospheric defense resources (interceptors, warning radars, and associated bases and personnel) were subsequently transferred to ADTAC. The command was, essentially, a transition organization between the Aerospace Defense Command, and the transfer of the air defense mission from the USAF to the Air National Guard in 1990. It consisted of over 25,000 military and civilian personnel performing duty at radar sites, missile warning stations, fighter interceptor bases, satellite tracking centers, and command and control centers throughout the world.〔(Major Maurice C. Eldredge (1985), A Brief history of ADTAC, the first five years. )〕 The command had the responsibility to provide operationally ready interceptor aircraft and aircrews for air defense alert 24 hours per day, 365 days per year. These assets had to be capable of scrambling to identify and assist or engage unidentified or hostile airborne objects approaching or entering United States airspace without proper approval. These scrambles were initiated from the respective region headquarters based on information derived from radar site data and previously known or expected airborne traffic. During increased states of readiness, these same ADTAC assets would provide additional air defense forces to CINCNORAD to provide early warning information, attack assessment, and air defense of North America. During peacetime operations, the mission of ADTAC was to command, train, manage, and evaluate forces required for the above mentioned air defense contingencies. In doing so, the tasks of preparing budget proposals, acquiring equipment, and providing support requirements, were essential to providing ready air defense forces. ==Components== * Subordinate to the ADTAC headquarters element were six air defense air divisions (20th, 21st, 23d, 24th, 25th and 26th), Air Forces Iceland, the Distant Early Warning Line, and the Air Defense Weapons Center The six air division commanders also functioned as the NORAD region commanders for their particular regions during wartime operations. Each air division had responsibility for a specific area of the country.〔 * Each air division was commanded from a SAGE (Semi Automatic Ground Environment) blockhouse housing that division's command and control element plus associated air defense radar and computer hardware. Radar sites associated with the SAGE system consisted of 80 Long Range Radars (LRRs) and 21 radar squadrons.〔 * Subordinate to each air division were assigned fighter interceptor squadrons. The fighter units allocated to ADTAC consisted of seven Air Force and 10 Air National Guard units. The Air Force fighter squadrons were equipped with F-4 Phantom II and F-106 Delta Dart aircraft. The Air National Guard units possessed the F-101 Voodoo, F-4 Phantom II, and the F-106 Delta Dart.〔 * The Distant Early Warning Line was the system of 31 radar sites stretching from Alaska to Greenland used to provide early warning attack information.〔 * The Air Defense Weapons Center was the primary location for training air defense forces. F-106 and T-33 pilot and instructor pilot training, as well as weapons controller training, was conducted here. Tactics research and development and weapons system evaluation were important aspects of the Weapons Center's mission.〔 * ADTAC also acquired two EB-57 Canberra electronic faker aircraft units, one Air Force and one Air National Guard, each with the mission of providing electronic countermeasure training. By flying simulated target missions to test radar sites, command and control facilities, as well as interceptor aircrew performance, these units provided additional valuable training for strategic air defense forces.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Air Defense, Tactical Air Command」の詳細全文を読む スポンサード リンク
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