Col. Christopher Corley, left, 90th Security Forces Group commander, and Chief Master Sgt. Steven Thompson, 90th SFG command chief, pose for a photo with the 2015 Crow Creek Challenge winners Sept. 11, 2015, on F.E. Warren Air Force Base, Wyo. This is Corley’s 14th assignment since his commissioning into the Air Force December, 1992, from Texas A&M University. (U.S. Air Force photo by Airman 1st Class Brandon Valle)