160519-N-TC720-375 MEDITERRANEAN SEA (May 19, 2016) Damage Controlman 2nd Class Scott Smith, from Salida, California, left, and Damage Controlman Fireman Elijah Howland, from las Vegas, right, conduct equipment checks on a gamma beta probe aboard USS Donald Cook (DDG 75) May 19, 2016. Donald Cook, an Arleigh Burke-class guided-missile destroyer, forward deployed to Rota, Spain is conducting a routine patrol 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 Mat Murch/Released)