Relieved of command
U.S. Air Force Colonels Steven Ramer, 23d Wing vice commander, Mike Koppen, former 23d Medical Group commander and Alvis Headen, new 23d MDG commander, perform the change of command ceremony July 27, 2012, at Moody Air Force Base, Ga. Koppen was relieved from the 23d MDG as commander and Headen assumed command. (U.S. Air Force photo by Senior Airman Eileen Meier/Released)