U.S. Air Force Master Sgt. Bruce Hartke(right) and Senior Airman Charles Loeffler (left), 125th Figther Wing, crew chiefs adjust a screw on an F-15 Eagle, during the Trident Warrior 2013 exercise at Langley Air Force Base, Va., July 18, 2013. Pilots from various U.S. Air Force and Navy units participated in the exercise over the Atlantic Ocean near the Hampton Roads, Va., area, July 8-19. (U.S. Air Force photo by Staff Sgt. John D. Strong II / Released)