U.S. Air Force Col. Robert Burgess, 307th Operations Group commander, hands the 307th Operations Support Squadron guidon to Lt. Col. Joanna Mitchell during a change of command ceremony at Barksdale Air Force Base, Louisiana, Oct. 3, 2018. Mitchell took command of the 307th OSS during the ceremony. She has served more than 20 years in the Air Force and has 2,132 flight hours. (U.S. Air force photo by Tech. Sgt. Cody Burt)