RAF ALCONBURY, United Kingdom – Senior Airman Timothy Miller, 423rd Force Support Squadron, receives his certificate for promotion to staff sergeant from Col. Steve Sweeney, 423rd Air Base Group commander, and Chief Master Sgt. Michael Ogden, 423rd ABG superintendent, during a promotion ceremony at RAF Alconbury Oct. 31. (U.S. Air Force photo by Staff Sgt. Brian Stives)