Senior Airman Joshua Sprinkle, 4th Aircraft Maintenance Squadron crew chief, prepares to marshal an F-15E Strike Eagle during exercise Coronet Warrior 17-01, Jan. 31, 2017, at Seymour Johnson Air Force Base, North Carolina. Airmen assigned to the 4th AMXS performed 24-hour operations during the duration of the exercise. (U.S. Air Force photo by Airman Shawna L. Keyes)