160710-F-DL987-017
Col. Richard Webster, left, 931st Operations Group Commander, passes the 931st Operations Support Squadron guidon to Lt. Col. Kevin L. Rainey, 931 OSS commander, during the 931 OSS change of command ceremony July 10, 2016, McConnell Air Force Base, Kan. The military change of command ceremony dates back to Frederick the Great of Prussia. (U.S. Air Force photo by Senior Airman Preston Webb)