170314-N-KP948-047 ATLANTIC OCEAN (March 14, 2017) - Gunner's Mate 2nd Class Samantha Canchola loads ammunition in a Mark 45 5-inch gun aboard the Arleigh Burke-class guided-missile destroyer USS Donald Cook (DDG 75) during flag officer sea training. Donald Cook is forward-deployed to Rota, Spain, conducting naval operations in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe and Africa. (U.S. Navy photo by Mass Communication Specialist 3rd Class Alyssa Weeks/Released)