A boat crew from U.S. Coast Guard Port Security Unit (PSU) 313, from Everett, Wash., conducts a security patrol in a 4th generation, 32-foot transportable security boat (TSB) off the coast of Dogu beach in support of exercise Foal Eagle, April 21, 2013. Exercise Foal Eagle, as a bi-annual combined and joint unit tactical field training exercise, provides valuable military training based on realistic requirements and missions expected of the Republic of Korea and U.S. forces on the Korean Peninsula. (U.S. Coast Guard photo by Petty Officer 2nd Class Etta Smith/Released)