As a result, the 4135th SW was replaced by the newly constituted 39th Bombardment Wing, Heavy (39th BW), which assumed its mission, personnel, and equipment on 1 February 1963. In the same way the 62d Bombardment Squadron, one of the unit's World War II historical bomb squadrons, replaced the 301st BS. The 54th Munitions Maintenance Squadron was also reassigned to the 39th. The 4135th's component maintenance and security units were replaced by units with the 39th designation of the newly established wing. Under the Dual Deputate organization, all flying and maintenance squadrons were directly assigned to the wing, so no operational group element was activated. Each of the new units assumed the personnel, equipment, and mission of its predecessor.