160428-N-TC720-493 BAY OF CADIZ (April 28, 2016) The guided-missile destroyer USS Donald Cook (DDG 75) pulls into Rota, Spain, April 28, 2016. Donald Cook is forward deployed to Rota, Spain and 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)