U.S. Marines secure a beach during an amphibious demonstration at Hat Yao Beach, Kingdom of Thailand Feb. 14 during exercise Cobra Gold 2014. The demonstration also included members from the Royal Thai and Republic of Korea Marine Corps. Cobra Gold, in its 33rd iteration, is designed to advance regional security in the Asia Pacific region. The U.S. Marines are with 3rd Battalion, 1st Marine Regiment, currently assigned to 4th Marine Regiment, 3rd Marine Division, III Marine Expeditionary Force under the unit deployment program (U.S. Navy photo by Mass Communication Specialist 1st Class Joy M. Kirch-Kelling/Release.)