U.S. Marines with the Amphibious Reconnaissance Platoon, a part of the 31st Marine Expeditionary Unit, shoot M40A3 and M40A5 rifles alongside the Royal Thai Marine Corps and the Republic of Korea Navy SEALs during scout sniper training at Recon Camp, Kingdom of Thailand, Feb. 16. The training was part of Exercise Cobra Gold 2012, an annual multinational exercise co-hosted by Thailand and the U.S., which is designed to advance security throughout the Asia-Pacific region and enhance interoperability with participating nations. The 31st MEU is the U.S. expeditionary force in readiness in the Asia-Pacific region. - U.S. Marines with the Amphibious Reconnaissance Platoon, a part of the 31st Marine Expeditionary Unit, shoot M40A3 and M40A5 rifles alongside the Royal Thai Marine Corps and the Republic of Korea Navy SEALs during scout sniper training at Recon Camp, Kingdom of Thailand, Feb. 16. The training was part of Exercise Cobra Gold 2012, an annual multinational exercise co-hosted by Thailand and the U.S., which is designed to advance security throughout the Asia-Pacific region and enhance interoperability with participating nations. The 31st MEU is the U.S. expeditionary force in readiness in the Asia-Pacific region.