EGLIN AIR FORCE BASE, Fla. -- Gen. Donald Hoffman, Air Force Material Command commander, hands Maj. Gen. Charles Davis the Air Armament Center guide-on during the AAC change-of-command ceremony May 1. General Davis took command of the AAC from Maj. Gen. David Eidsuane during the ceremony. The change-of-command ceremony is a time-honored military tradition symbolizing the continuity of authority as command is passed from one individual to another. (U.S. Air Force photo/ Airman Anthony Jennings)