A South Korean Marine rides on an amphibious assault vehicle before it touches the ground during a joint military exercise codenamed Cobra Gold at Hat Yao beach in Rayong province, eastern Thailand Thursday, Feb. 4, 2010. Besides Thailand and the United States, this year's annual exercise, in its 29th year, also participated by Singapore, Indonesia, Japan and South Korea which took part for the first time. The exercise, involving with 11,500 personnels including 6,000 from the U.S. , will focus on multilateral peacekeeping operations and humanitarian and disaster responses. (AP)

U.S. Marines rest in an amphibious assault vehicle (AAV) during an amphibious assault exercise as part of the "Cobra Gold 2010" (CG10) joint military exercise at a military base in Rayong Province February 4, 2010. About 14,000 soldiers from six countries, Thailand, U.S. , Singapore Indonesia, Japan and South Korea are participating in the three-week military exercise. (Reuters)