SAC's RBS Squadrons were discontinued when most detachment personnel transferred to Vietnam from 1966 to 1973 for Combat Skyspot ground-directed bombing operations. The first "Quick Reaction" bombing was the "Pink Lady" mission on 6 July 1966 using SAC B-52D/Fs to support the U.S. Army's 1st Air Cavalry Division. The 1972 Operation Linebacker II also used Skyspot for Hanoi/Haiphong bombings in North Vietnam which resulted in the loss of 25 SAC aircrew members.