July 13, 2015 Chief earns Army Air Assault Badge It isn’t every day the Air Force sends an Airman to attend the Army’s brutal Air Assault School in Ft. Benning, Georgia, and its inconceivable for that Airman to be a chief master sergeant with more than 25 years of service.Until now.At 48, Chief Master Sgt. Robert Grimsley, 315th Security Forces