180712-N-VQ841-0119 PACIFIC OCEAN (July 12, 2018) Fire Controlman 2nd Class Alexys Stone performs maintenance on a Phalanx close-in weapons system (CIWS) aboard the Nimitz-class aircraft carrier USS Carl Vinson (CVN 70). (U.S. Navy photo by Mass Communication Specialist Seaman Ethan J. Soto/Released)