2/8/2013 - U.S. Air Force Airmen from the 18th Expeditionary Aircraft Maintenance Squadron, Eielson Air Force Base, Alaska, conduct preflight checks on F-16 Fighting Falcons from the 354th Fighter Wing, also from Eielson Air Force Base, in support of exercise Cope North 2013 at Andersen Air Force Base, Guam, Feb. 7, 2013. Cope North is an annual air combat tactics, humanitarian assistance and disaster relief exercise designed to increase the readiness and interoperability of the U.S. Air Force, Japan Air Self-Defense Force and Royal Australian Air Force. (U.S. Air Force photo by Airman 1st Class Marianique Santos/RELEASED)

2/8/2013 - U.S. Air Force F-16 Fighting Falcons from the 354th Fighter Wing, Eielson Air Force Base, Alaska, are parked on the Andersen Air Force, Base flight line during Cope North 2013, Feb. 7, 2013. Cope North is an annual air combat tactics, humanitarian assistance and disaster relief exercise designed to increase the readiness and interoperability of the U.S. Air Force, Japan Air Self-Defense Force and Royal Australian Air Force. (U.S. Air Force photo by Airman 1st Class Marianique Santos/RELEASED)

2/8/2013 - Members of the U.S. Air Force 36th Expeditionary Aircraft Maintenance Squadron discuss B-52 Stratofortress maintenance training during Cope North 2013, at Andersen Air Force Base, Guam, Feb. 7, 2013. Cope North is an annual air combat tactics, humanitarian assistance and disaster relief exercise designed to increase the readiness and interoperability of the U.S. Air Force, Japan Air Self-Defense Force and Royal Australian Air Force. (U.S. Air Force photo by Airman 1st Class Marianique Santos/RELEASED)

2/8/2013 - U.S. Air Force Airmen from the 36th Expeditionary Aircraft Maintenance Squadron train on Joint Air-to-Surface Standoff Missile loading on the Andersen Air Force Base, Guam, flightline during Cope North 2013, Feb. 7, 2013. Cope North is an annual air combat tactics, humanitarian assistance and disaster relief exercise designed to increase the readiness and interoperability of the U.S. Air Force, Japan Air Self-Defense Force and Royal Australian Air Force. (U.S. Air Force photo by Airman 1st Class Marianique Santos/RELEASED)

2/8/2013 - Royal Australian Air Force F/A-18 Hornets from the No. 3 Squadron, RAAF Base Williamtown, Australia, take off from the flight line at Andersen Air Force Base, Guam, during Cope North 2013, Feb. 7, 2013. Cope North is an annual air combat tactics, humanitarian assistance and disaster relief exercise designed to increase the readiness and interoperability of the U.S. Air Force, Japan Air Self-Defense Force and Royal Australian Air Force. (U.S. Air Force photo by Airman 1st Class Marianique Santos/RELEASED)

2/8/2013 - A U.S. Air Force F-16 Fighting Falcon from the 354th Fighter Wing, Eielson Air Force Base, Alaska, flies over the Andersen Air Force, Base flight line during Cope North 2013, Feb. 7, 2013. Cope North is an annual air combat tactics, humanitarian assistance and disaster relief exercise designed to increase the readiness and interoperability of the U.S. Air Force, Japan Air Self-Defense Force and Royal Australian Air Force. (U.S. Air Force photo by Airman 1st Class Marianique Santos/RELEASED)