U.S. Air Force Col. Stephen M. Harvey, right, relinquishes command of the 23d Maintenance Group with Col. Russell P. Cook, 23d Wing commander, left, presiding over the change of command ceremony at Moody Air Force Base, Georgia, July 15, 2021. Serving as the 23d MXG commander was Harvey's final assignment before retiring after more than 38 years of service. (U.S. Air Force photo by Staff Sgt. Jordan Garner)