Rear Adm. Hyun Sung Um, commander of Republic of Korea (ROK) Navy 2nd Fleet, and Rear Adm. Seung Joon Lee, deputy commander of R

100913-N-4366B-501 
PYEONGTAEK, Republic of Korea (Sept. 13, 2010) Rear Adm. Hyun Sung Um, commander of Republic of Korea (ROK) Navy 2nd Fleet, and Rear Adm. Seung Joon Lee, deputy commander of ROK Navy 2nd Fleet, brief Adm. Patrick M. Walsh, commander of U.S. Pacific Fleet, on the findings of the Joint Investigation Group Report of the ROK Navy corvette ROKS Cheonan (PCC 772). A non-contact homing torpedo exploded near the ship March 26, 2010, sinking it, resulting in the death of 46 ROK Navy sailors. (U.S. Navy photo by Lt. Jared Apollo Burgamy/Released)

100913-N-4366B-501 
 PYEONGTAEK, Republic of Korea (Sept. 13, 2010) Rear Adm. Hyun Sung Um, commander of Republic of Korea (ROK) Navy 2nd Fleet, and Rear Adm. Seung Joon Lee, deputy commander of ROK Navy 2nd Fleet, brief Adm. Patrick M. Walsh, commander of U.S. Pacific Fleet, on the findings of the Joint Investigation Group Report of the ROK Navy corvette ROKS Cheonan (PCC 772). A non-contact homing torpedo exploded near the ship March 26, 2010, sinking it, resulting in the death of 46 ROK Navy sailors. (U.S. Navy photo by Lt. Jared Apollo Burgamy/Released)