150207-N-JN664-221 MEDITERRANEAN SEA (Feb. 07, 2015) Gunner’s Mate 2nd Classes Elihu Santos, from McAllen, Texas and Kali Morris, from Doylestown, Ohio, perform routine maintenance to the vertical launching system aboard USS Donald Cook (DDG 75). 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)