Col. David N. Miller Jr., commander of the 21st Space Operations Wing at Peterson Air Force Base, Colo., passes the 10th Space Warning Squadron guidon to Lt. Col. Michelle Kneupper during a change-of-command ceremony July 10, 2013, at Cavalier Air Force Station, N.D. Kneupper assumed command of the squadron from Lt. Col. Lorinda Frederick. (U.S. Air Force photo/Tim Flack)