This item is a 3" military Strategic Air Command patch. Strategic Air Command ( SAC ) was both a Department of Defense and a United States Air Force (USAF) Major Command (MAJCOM) responsible for Cold War command and control of 2 of the 3 components of the U.S. military's strategic nuclear strike, the so-called " Nuclear Triad ," with SAC having control of land-based strategic bomber aircraft and ICBMs. SAC also operated all USAF jet air refueling , strategic reconnaissance aircraft , and airborne command post aircraft.