Landing Craft Utility 1631 from Assault Craft Unit 1 arrives in Sattahip, Thailand, from the forward-deployed amphibious dock landing ship USS Tortuga to offload Marines from the 31st Marine Expeditionary Unit to participate in Exercise Cobra Gold 09. Cobra Gold is an annual Thailand and U.S. co-sponsored joint coalition multinational military exercise designed to train a Thai, U.S. and Singaporean Coalition Task Force. The exercise will also include humanitarian civic action projects with participating nations from Indonesia, Japan, Singapore, Thailand and the U.S.