U.S. Air Force Airman 1st Class Ryan Hortman, 909th Air Refueling Squadron boom operator, refuels an 18th Aggressor Squadron F-16 Fighting Falcon during Forceful Tiger Jan. 28, 2016, near Okinawa, Japan. The KC-135 has provided the ability to project forces anywhere in the world since it first entered the service in 1957. (U.S. Air Force photo by Staff Sgt. Maeson L. Elleman/Released)