A Boeing B-52 Stratofortress sits on the ramp at a U.S. Air Force base, its eight jet engines and swept wings dominating the frame. Entering service in 1955, the B-52 became the backbone of Strategic Air Command's nuclear deterrent throughout the Cold War and later flew thousands of conventional bombing sorties over Vietnam. This photograph, part of a larger collection of USAF aircraft and Thunderbirds imagery, captures the routine ground operations that kept America's long-range bomber fleet mission-ready. Project: 218215