Hospital Corpsman 3rd Class Haley Brewer mans the rails aboard the Arleigh Burke-class guided-missile destroyer USS Preble (DDG 88) as the ship enters port in Busan. Preble is on patrol with the George Washington Carrier Strike Group conducting exercises with the Republic of Korea (ROK) navy to strengthen maritime interoperability and U.S.-ROK alliance. (U.S. Navy photo by Mass Communication Specialist 3rd Class Paul Kelly/Released)