U.S. Sailors set up barriers as part of a barricade drill on the flight deck of the aircraft carrier USS Harry S. Truman (CVN 75) in the Gulf of Oman Dec. 1, 2013. The Harry S. Truman, the flagship for the Harry S. Truman Carrier Strike Group, was deployed to the U.S. 5th Fleet area of responsibility to conduct maritime security operations and theater security cooperation efforts in support of Operation Enduring Freedom.