An F-15E Strike Eagle flys over glacial fields during a training mission April 20 over Alaska. The F-15E is assigned to the 90th Fighter Squadron at Elmendorf Air Force Base, Alaska, which traces its history back to August 1917. The F-15E at Elmendorf AFB will soon be replaced by the F-22 Raptor. (U.S. Air Force photo/Tech. Sgt. Keith Brown)
