180124-N-FD185-003 GULF OF TADJOURA, Djibouti (Jan. 24, 2018) Sailors aboard a SeaArk patrol boat fire an LA51 warning device from an M500 shotgun during an underway weapons qualification course. Coastal Riverine Squadron (CRS) 10 is forward-deployed to the U.S. 6th Fleet area of operations and conducts joint and naval operations, often in concert with allied and interagency partners, in order to advance U.S. national interests and security and stability in Europe and Africa. (U.S. Navy photo by Master-at-Arms 2nd Class Theresa Mullis/Released)