An F-16 Fighting Falcon from the 18th Aggressor Squadron, Eielson Air Force Base, Alaska, takes off during the Cope North 2012 exercise at Andersen Air Force Base, Guam, Feb. 13, 2012. The U.S. Air Force, the Japan Air Self Defense Force and the Royal Australian Air Force began the exercise here Feb. 11. The exercise, which will run through Feb. 24, is the latest in a series of multinational exercises designed to enhance each country's air operations. (U.S. Air Force photo/Senior Airman Jeffrey Schultze)