Republic of Korea (ROK) Chief Petty Officer Dong Soon Jung, assigned to ROK Naval Mobile Construction Battalion, performs an underwater fillet weld while being observed by members of the U.S. and ROK Navies at the ROK engineering school at Jinhae, ROK March 15, 2016, during exercise Foal Eagle 2016. Foal Eagle is an annual, bilateral training exercise designed to enhance the readiness of U.S. and ROK forces, and their ability to work together during a crisis. (U.S. Navy combat camera photo by Mass Communication Specialist 1st Class Charles E. White/Released)