171013-N-TB148-070 BUSAN, Republic of Korea (Oct. 13, 2017). The Ohio-class guided-missile submarine USS Michigan (SSGN 727) (Gold) approaches the pier of Republic of Korea's Busan Naval Base as part of a routine port visit. The visit is to strengthen the already strong relationship between the U.S. Navy and the people of the Republic of Korea. (U.S. Navy photo by Mass Communication Specialist Seaman William Carlisle/Released)