Col. Timothy Dodge, 90th Mission Support Group commander, presents Chief Master Sgt. Jimmy Williams, 90th MSG, a certificate of retirement from the U.S. Air Force in Bldg. 1270 Sept. 21. From 1983 until 2012, Williams served his country and retired from his final position as superintendent of the 90th MSG. (U.S. Air Force photo by Airman 1st Class Jason Wiese)