SAC assigned its first Boeing B-52 Stratofortress to the wing in June 1955. The wing was redesignated the 93d Bombardment Wing, Heavy on 1 February 1955 in anticipation of the arrival of the B-52. Its B-52Bs were initially used for crew training. The wing was declared combat ready with the B-52 on 12 March 1956, but became nonoperational two months later when a second squadron began to equip with Stratofortresses. It became operational again on 26 June 1957, when its mission became primarily crew training.