Langley Air Force Base Honor Guard members present the colors at the Air Combat Command Change of Command ceremony at Joint Base Langley-Eustis, Va., March 10, 2017. U.S. Air Force Gen. James M. Holmes assumed command of ACC from Gen. Herbert “Hawk” Carlisle, who retiresd after 395 years of service to the Air Force. (U.S. Air Force photo by Senior Airman Kimberly Nagle)