The group returned to the regular Air force from 1 December 1952 to 1 March 1955, as the 456th Troop Carrier Group, Medium as the operations group for the 456th Troop Carrier Wing operating Fairchild C-119 Flying Boxcar transports in both a standard airlift and research mission, based at Miami International Airport, where it replaced the 435th Troop Carrier Group, a reserve unit activated for the Korean War on 1 December 1952. The group moved to Charleston Air Force Base, South Carolina on 15 August 1953 and was inactivated there on 1 March 1955.