U.S. Marines with the 3rd Battalion, 1st Marine Regiment, assigned to the 4th Marine Regiment, 3rd Marine Division, III Marine Expeditionary Force as part of a unit deployment program, secure a beach during an amphibious demonstration in Hat Yao, Thailand, Feb. 14, 2014, during exercise Cobra Gold 2014. Cobra Gold is a regularly scheduled joint/combined exercise designed to ensure regional peace and strengthen the ability of the Royal Thai Armed Forces to defend Thailand or respond to regional contingencies.