180323-N-WX604-0196 ATLANTIC OCEAN (March 23, 2018) Airman Alex Esparaza, foreground, fires an M240B machine gun while Master-at-Arms 2nd Class Taylor Soucie instructs during a rifle qualification at sea aboard the aircraft carrier USS George H.W. Bush (CVN 77). The ship is underway conducting sustainment exercises to maintain carrier readiness. (U.S. Navy photo by Mass Communication Specialist 2nd Class Joseph E. Montemarano)