The wing gained its fourth operational squadron on 1 August when the 436th Bombardment Squadron (BS), consisting of 15 Boeing B-52 Stratofortresses moved to Barksdale from Carswell AFB, Texas where it had been one of the three squadrons of the 7th Bombardment 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. This was increased to half the squadron's aircraft in 1962. The 4238th (and later the 2d) continued to maintain an alert commitment until the end of the Cold War. In 1962, the wing's bombers began to be equipped with the GAM-77 Hound Dog and the GAM-72 Quail air-launched cruise missiles, The 4134th Airborne Missile Maintenance Squadron was activated in November to maintain these missiles.