An HH-60 helicopter crashed Thursday night at Nellis AFB, Nev. Four crew members received minor injuries and were transported to a local facility for treatment, according to a Nellis release. The crash occurred at 10 p.m. during a training mission at the Nevada Test and Training Range; the cause is under investigation. It was a hectic day at Nellis, as a civilian pilot was injured earlier that morning when an A-4 Skyhawk he was flying crashed at the base while flying red air operations.