Barksdale Air Force Base, La. --   U.S. Air Force Col. Sandra Vandiviere, 307th Mission Support Group commander, returns the salute from airmen of the unit during a change of command ceremony at Barksdale Air Force Base, La., July 8, 2017. She brings a wealth of experience to the unit, having served more than 20 years in the Air Force. Col. Vandiviere received her commission in 1993 and has served in multiple capacities in active duty and Reserve assignments. (U.S. Air Force photo by Tech. Sgt. Ted Daigle/released)