160712-N-TC720-087 BAY OF CADIZ (July 12, 2016) USS Donald Cook (DDG 75) pulls into Rota, Spain, after completing its fourth forward deployed patrol. Donald Cook, an Arleigh Burke-class guided-missile destroyer, forward deployed to Rota, Spain is conducting a routine patrol in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe. (U.S. Navy photo by Mass Communication Specialist 2nd Class Mat Murch/Released)