sentences:  Replaced the propeller-driven B-29s with new B-47E Stratojet swept-wing bomber medium bombers in 1954, capable of flying at high subsonic speeds and primarily designed for penetrating the airspace of the Soviet Union and became combat ready in April 1955.Reassigned to Eighth Air Force, 802d Air Division on 1 July 1955 after becoming operationally ready with the B-47.Performed bombardment training and air refueling operations to meet SAC's global commitments.