sentences:  The 93d Bombardment Squadron (BS), consisting of 15 Boeing B-52 Stratofortresses, moved to Kincheloe from Homestead AFB, Florida where it had been one of the three squadrons of the 19th Bombardment Wing in August 1961.At the same time three maintenance squadrons and a squadron to provide security for special weapons were activated and assigned to the wing.Starting in 1960, one third of the squadron's aircraft were maintained on fifteen-minute alert, fully fueled and ready for combat to reduce vulnerability to a Soviet missile strike.