Air Force Senior Airman Jadon Sylvester conducts preflight checks inside the cockpit of a KC-10 Extender aircraft at Al Dhafra Air Base, United Arab Emirates, March 2, 2018. Sylvester is a flight engineer assigned to the 380th Air Expeditionary Wing. The KC-10 can refuel a variety of U.S. and allied military aircraft within the same mission. Air Force photo by Tech. Sgt. Anthony Nelson Jr.