190526-N-VW723-0035 PACIFIC OCEAN (May 26, 2019) Gunner's Mate 2nd Class Wallace Garlington cleans a MarK 38 25 mm machine gun after a live-fire exercise aboard the aircraft carrier USS Nimitz (CVN 68). Nimitz is currently underway conducting routine operations. (U.S. Navy photo by Mass Communication Specialist Seaman Keenan Daniels/Released)