180502-N-AD724-1665 ATLANTIC OCEAN (May 2, 2018) A Phalanx Close-In Weapons System (CIWS) 20mm radar-guided Gatling gun aboard the Nimitz-class aircraft carrier USS Abraham Lincoln (CVN 72) fires at a target during combat systems ship qualification trials. (U.S. Navy photo by Mass Communication Specialist Seaman Shane Bryan/Released)