U.S. Navy Ensign Timothy McDaniel, left, a surface rescue swimmer assigned to the guided missile destroyer USS Mason (DDG 87), signals Seaman Michael Delacruz to indicate a safe water entry during a seamanship training exercise Dec. 4, 2013, in the Gulf of Oman. The Mason was deployed as part of the Harry S. Truman Carrier Strike Group in support of maritime security operations and theater security cooperation efforts in the U.S. 5th Fleet area of responsibility. (U.S. Navy photo by Mass Communication Specialist 2nd Class Rob Aylward/Released)