170703-N-FM530-081 MEDITERRANEAN SEA (July 3, 2017) Sailors practice defensive positions during a basic security reaction force class aboard the San Antonio-class amphibious transport dock ship USS Mesa Verde (LPD 19). The ship is deployed with the Bataan Amphibious Ready Group to support maritime security operations and theater security cooperation efforts in the U.S. 6th Fleet and U.S. 5th Fleet areas of operations. (U.S. Navy photo by Mass Communication Specialist 2nd Class Brent Pyfrom/Released)