A U.S. Marine evaluates his surroundings. A U.S. Marine from the 31st Marine Expeditionary Unit evaluates his surroundings as he participates in an Exercise Cobra Gold 2006 antiterrorism scenario with Royal Thai marines in Hat Yao, Thailand, on May 19, 2006. The exercise is a combined annual joint training exercise involving the United States, Thailand, Japan, Singapore, and Indonesia. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 520627-K-JGP08-200.jpg Photo Gallery