The 502d Air Defense Group is a disbanded United States Air Force organization. Its last assignment was with Air Defense Command (ADC)'s 4708th Air Defense Wing, at Youngstown Municipal Airport, Ohio. It was inactivated on 18 August 1955. The group was originally activated as a support group at the end of World War II and provided logistics and administrative support for the 404th Fighter Group in Germany until returning to the United States, where it was inactivated. The group was activated once again in 1953, when ADC established it as the headquarters for a dispersed fighter-interceptor squadron and the medical, maintenance, and administrative squadrons supporting it. It was replaced in 1955 when ADC transferred its mission, equipment, and personnel to the 79th Fighter Group in a projec