150722-N-TC720-274 ATLANTIC OCEAN (July 22, 2015) An SH-60 Sea Hawk helicopter from the Spanish military conducts flight training with the guided-missile destroyer USS Donald Cook (DDG 75). Donald Cook 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 3rd Class Mat Murch/Released)