Airmen from the 25th Fighter Squadron at Osan Air Base, South Korea, walk to their aircraft at Udon Thani Royal Thai Air Force Base, Thailand, March 4, 2010, before conducting the first of several planned missions as part of Cope Tiger 2010. The Airmen are participating in the annual, multilateral field training exercise involving the U.S. Air Force, Royal Thai Air Force and Army, and the Republic of Singapore Air Force March 1-12. (U.S. Air Force photo/Capt. Genieve David)