Col. Billy Langford, 22nd Operations Group commander, and John Dock, 22nd Operations Support Squadron project officer, walk through Building 1094 for a final inspection Oct. 20, 2010, McConnell Air Force Base, Kan. After more than 20 years of service, Colonel Langford will retire from the Air Force. (U.S. Air Force photo/Airman 1st Class Andrea Salazar)