Three f-15 Eagles assigned to the 44th Expeditionary Fighter Squadron, Kadena Air Base, Japan ascend into formation after receiving fuel from a KC-135 from the 96th Air Refueling Squadron, Joint Base Pearl Harbor-Hickam, Hawaii, March 21, over Thailand air space before continuing maneuvers during Cope Tiger 2011, an annual, multilateral, joint field training exercise currently being conducted at Korat and Udon Thani Royal Thai Air Bases, March 14-25. Participants of Cope Tiger include the U.S. Air Force, the U.S. Marine Corps, the Royal Thai Air Force, Royal Thai Army, and the Republic of Singapore Air Force.