Lt. Col. Craig Thorstenson, 460th Operations Group, Detachment 1 commander, covers a rolled guidon flag, which symbolizes the closure of the detachment, during the 460th OG Det. 1 deactivation ceremony Jan. 11, 2017, at the Leadership Development Center on Buckley Air Force Base, Colo. The official inactivation of Det. 1 will be on Jan. 31, 2017. (U.S. Air Force photo by Airman 1st Class Gabrielle Spradling/Released)