NORTHERN EDGE 2011 exercise
Senior Airman Mitchell Lake conducts preflight checks on an F-15E Strike Eagle June 13, 2011, during the NORTHERN EDGE 2011 exercise at Eielson Air Force Base, Alaska. Airman Lake is a crew chief assigned to the 391st Aircraft Maintenance Unit at Mountain Home Air Force Base, Idaho. (U.S. Air Force photo/Staff Sgt. Christopher Boitz)