The KC-135 Stratotanker, introduced in 1957, was the U.S. Air Force’s first jet-powered aerial refueling aircraft, revolutionizing long-range air operations. Developed from the Boeing 367-80 prototype, it featured four turbofan engines and a flying boom system for efficient mid-air refueling. Under Strategic Air Command (SAC), the KC-135 became the backbone of U.S. nuclear deterrence, ensuring bombers like the B-52 could remain airborne for extended missions, increasing global strike capability. During the Cold War, SAC relied on a constant airborne presence, with KC-135s enabling bombers to stay aloft as part of Operation Chrome Dome. Beyond nuclear operations, the KC-135 supported conventional forces in Vietnam, the Gulf War, and modern conflicts, refueling fighters, bombers, and reconnaissance aircraft worldwide. As SAC dissolved in 1992, its refueling role transitioned to Air Mobility Command, and upgraded KC-135s continue serving today, ensuring global reach for U.S. airpower
