A U.S. Air Force F-16C Fighting Falcon from the 18th

A U.S. Air Force F-16C Fighting Falcon from the 18th Aggressor Squadron, Eielson Air Force Base, prepares to refuel from KC-10 Extender from the 32nd Air Refueling Squadron, Joint Base McGuire-Dix-Lakehurst, during Valiant Shield 2014. The KC-10 Extender refueled aircraft form the Air Force, Navy and Marine Corps over the course of the exercise. Valiant Shield is a U.S.-only exercise integrating and estimated 18,000 Navy, Air Force, Army and Marine Corps personnel, more than 200 aircraft and 19 surface ships, offering real-world joint operational experience to develop capabilities that provide a full range of options to defend U.S. interests and those of its allies and partners. (U.S. Air Force Photo by Staff Sgt. William Banton/Released)