170927-N-UB406-069 IRISH SEA (Sept. 27, 2017) Machinist's Mate 3rd Class Kenneth Peterson, assigned to the Arleigh Burke-class guided-missile destroyer USS Mitscher (DDG 57), monitors the ship's reverse osmosis equipment in the ship's main engineering space. Mitscher 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 Seaman Cameron M. Stoner/Released)