Senior Airman Charlton Hampton refuels an F-15C Eagle from a KC-135 Stratotanker Dec. 23, 2014, near Okinawa, Japan. Mid-air refueling gives the Air Force the ability to extend the range of its aircraft, which is integral to the global reach of U.S. military power and humanitarian relief in the event of a crisis. Charlton is a 909th Air Refueling Squadron boom operator. (U.S. Air Force photo by Senior Airman Maeson L. Elleman)