160215-N-ZZ999-001 BUSAN, Republic of Korea (Feb. 15, 2016) Builder 3rd Class Christopher Sweat of Naval Mobile Construction Battalion (NMCB) 3 and Republic of Korea (ROK) navy engineer from NMCB 1 install a door frame for a SEA Hut. NMCB 3 and the ROK NMCB 1 are working together to construct a Timber Tower and a SEA Hut in preparation for Key Resolve/Foal Eagle 2016. NMCB 3 is homeported in Port Hueneme, Calif., and is currently deployed to Okinawa, Japan. Its mission is to support Navy and joint forces throughout the U.S. Pacific Command with construction projects and humanitarian missions in more than 13 different geographical locations. (U.S. Navy photo by Chief Builder Steven Maldonado/Released)