U.S. Air Force Col. Christopher Backus, incoming 379th Expeditionary Medical Group commander, renders his first salute to U.S. Air Force Brig. Gen. Tulley, 379th Air Expeditionary Wing commander, after assuming command of the 379th EMDG during a change of command ceremony, July 9, 2020, Al Udeid Air Base, Qatar. The 379th EDMG provides tele-radiology support for joint and allied forces in four locations.