U.S. Air Force Staff Sgt. Kelly Kollmar, 455th Expeditionary Aircraft Maintenance Squadron, repairs an F-15E engine on Bagram Airfield Jan. 23, 2010. Kollmar is deployed from Royal Air Force Lakenheath, England, and is from Buffalo, N.Y. (U.S. Air Force photo by: Tech. Sgt. Jeromy K. Cross/released)