Sailors participate in a line-handling detail as USS Donald Cook (DDG 75) arrives at Constanta, Romania, for a scheduled port visit Dec. 30, 2014. Donald Cook, an Arleigh Burke-class guided-missile destroyer, forward-deployed to Rota, Spain, is conducting naval operations 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 Karolina A. Oseguera/Released)