180623-N-JU894-0070 ATLANTIC OCEAN (June 23, 2018) Chief Machinery Repairman Mike Martin mans a fire hose during a damage control training team exercise aboard the aircraft carrier USS George H.W. Bush (CVN 77). The ship is underway conducting routine training exercises to maintain carrier readiness. (U.S. Navy photo by Mass Communication Specialist 3rd Class Brooke Macchietto/Released)