During Cope North, an F-16 "Aggressor" Fighting Falcon takes off Feb. 12, 2010, at Andersen Air Force Base, Guam. The U. S. Air Force and the Japan Air Self-Defense Force conduct Cope North annually at Andersen AFB to increase combat readiness and interoperability. The aircraft is assigned to the 18th Aggressor Squadron at Eielson AFB, Alaska. (U.S. Air Force photo/Staff Sgt. Andy M. Kin)