171013-N-FP878-024 ATLANTIC OCEAN (Oct. 13, 2017) Cameroonian Ensign Tchinde Etienne, left, receives conning officer training from Lt. j.g. James Wickham aboard the Arleigh Burke-class guided-missile destroyer USS Donald Cook (DDG 75). Donald Cook is forward deployed to Rota, Spain, on its sixth patrol in the U.S. 6th Fleet area of operations in support of regional allies and partners, and U.S. national security interests in Europe. (U.S. Navy photo by Mass Communication Specialist 1st Class Theron J. Godbold/Released)