U.S. Air Force Senior Airman William McKinney watches an F-15E Strike Eagle piloted by Maj. Thomas Bean and Maj. Joseph Ryther taxi by on Dec 25, 2011 at Bagram Airfield, Afghanistan. McKinney is a crew chief with the 455th Expeditionary Maintenance Squadron, Bean is an F-15E Strike Eagle pilot assigned to the 455th Expeditionary Operations Support Squadron, and Ryther is a weapons system officer assigned to the 335th Expeditionary Fighter Squadron. U.S. Air Force photo/Tech. Sgt. Matt Hecht