A U.S. Air Force F-15E Strike Eagle aircraft assigned

A U.S. Air Force F-15E Strike Eagle aircraft assigned to the 4th Fighter Wing, Seymour Johnson Air Force Base, North Carolina, taxis the flight line June 15, 2015, during Exercise Northern Edge 15 at Eielson Air Force Base, Alaska. Northern Edge 15 is Alaska’s premier joint training exercise designed to practice operations, techniques and procedures as well as enhance interoperability among the services. Thousands of participants from all the services, Airmen, Soldiers, Sailors, Marines and Coast Guardsmen from active duty, Reserve and National Guard units are involved. (U.S. Marine Corps photo by Staff Sgt. Jeffrey D. Anderson/ Released)