following the return of the bombardment group the wing re-equipped the propeller-driven b-29s with new b-47e stratojet swept-wing bomber medium bombers in 1953, capable of flying at high subsonic speeds and primarily designed for penetrating the airspace of the soviet union. it trained for proficiency in global strategic bombardment, adding air refueling to its mission in 1952. the wing deployed at raf mildenhall, england, september–december 1951, and at raf upper heyford, england, december 1953 – march 1954. from april to july 1957, it deployed to andersen air force base, guam. sac began phasing the b-47 out of the inventory beginning in 1962, sending the last of the wing's aircraft to davis-monthan air force base, arizona in 1963.