Col. James McCune, 495th Fighter Group commander, left, hands the guidon to Maj. Jeremiah Parvin, 358th Fighter Squadron new commander, during the change of command ceremony in the A-10 hangar at Whiteman Air Force Base, June 21, 2016. One of the oldest military traditions is the passing of a unit flag to symbolize the passing of authority from the outgoing commander to the new commander. (U.S. Air Force photo by Senior Airman Missy Sterling/Released)