The 4683rd Air Defense Wing (Air Def Wg) is a discontinued United States Air Force (USAF) organization. Its last assignment was with Aerospace Defense Command (ADC)'s Goose Air Defense Sector at Thule Air Base, Greenland, where it was discontinued in 1965. The wing was organized in 1960 and assigned a fighter interceptor squadron and a squadron operating a radar for ground control intercept. The 4683d also acted as the host organization at Thule until October, when support units were transferred to the 4683d Air Base Group, which was attached to the wing, but assigned to the 64th Air Division in Newfoundland. It supported the Ballistic Missile Early Warning System when the system was activated at Thule, but was discontinued when that mission supplanted the wing's traditional air defense mi