170926-N-UB406-014 ATLANTIC OCEAN (Sept. 26, 2017) Hospital Corpsman 3rd Class Eric Virak, assigned to the Arleigh Burke-class guided-missile destroyer USS Mitscher (DDG 57), tests the ship's water. Mitscher is 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 Seaman Cameron M. Stoner/Released)