170320-N-KP948-055 ATLANTIC OCEAN (March 20, 2017) Gunner's Mate 2nd Class Samantha Canchola, from Chicago, flushes the magazine sprinkler system during a routine check aboard the guided-missile destroyer USS Donald Cook (DDG 75) March 20, 2017. Donald Cook is forward-deployed to Rota, Spain, and is 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)