170913-N-FP878-072 NAVAL STATION ROTA, Spain (Sept. 13, 2017) Lt. j.g. Ericka Sample, from Corpus Christi, Texas, explains daily operations aboard the San Antonio-class amphibious transport dock ship USS Mesa Verde (LPD 19) to officers assigned to the Arleigh Burke-class guided-missile destroyer USS Donald Cook (DDG 75) Sept. 13, 2017. Donald Cook, forward-deployed to Rota, Spain, is 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)