Lt. Col. Maureen Harback takes command of the 81st Diagnostics and Therapeutics Squadron from current commander Col. Thomas Bacon during an assumption of command ceremony July 1, 2014 at the Keesler Medical Center. Col. (Dr.) Tom Harrell, 81st Medical Group commander officiated the ceremony. Bacon will become commander of the 99th Medical Operations Squadron at Nellis Air Force Base, Nev. (U.S. Air Force photo by Steve Pivnick)