The forward-deployed Arleigh Burke-class guided-missile destroyer USS Donald Cook (DDG 75) approaches Constanta, Romania, for a scheduled port visit. Donald Cook, the first of four Arleigh Burke-class destroyers to be forward-deployed to Rota, Spain, is serving on a scheduled patrol in the U.S. 6th Fleet area of responsibility as part of the president's european phased adaptive approach to ballistic missile defense in Europe. (U.S. Navy photo by Mass Communication Specialist Seaman Edward Guttierrez III/Released)