
Strategic Air Command (SAC) was the United States Air Force (USAF) Major Command for Cold War command and control of land-based strategic bombers and intercontinental ballistic missiles. SAC also operated aerial refueling, strategic reconnaissance, and command post aircraft. SAC primarily consisted of the Second Air Force, Eighth Air Force and the...
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http://en.wikipedia.org/wiki/Strategic_Air_Command

(from the article `United States Air Force, The`) The advent of nuclear weapons delivered by long-range bombers meant that the Air Force would play a decisive role in any future superpower conflict ...
Found on
http://www.britannica.com/eb/a-z/s/169

a U.S. Air Force command charged with intercontinental air strikes, especially nuclear attacks.
Found on
https://www.infoplease.com/dictionary/strategic-air-command
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