150402-N-JN664-043 ATLANTIC OCEAN (April 3, 2015) Sailors aboard USS Donald Cook (DDG 75) participate in a simulated general quarters drill while being assessed by flag officer sea training (FOST) staff April 3, 2015. 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)