CHIANG MAI, Thailand- Royal Thai Army Sgt. Thanongsok Boonan detonates an interior charge as Staff Sgt. Jesse Kekiwi, the senior instructor of Special Operations Training Group, Special Missions Branch, III Marine Expeditionary Force observes, Feb 3, during Dynamic Entry practical application as part of Exercise Cobra Gold 2009. Cobra Gold is a regularly scheduled joint/coalition multinational exercise and is the latest in the continuing series of U.S.-Thai military exercises designed to ensure regional peace and stability. This exercise also strengthens the Royal Thai government's self defense abilities and their capability to respond to regional contingencies.