190620-N-XN169-1013 ARABIAN SEA (June 20, 2019) The Arleigh Burke-class guided-missile destroyer USS Mason (DDG 87) fires its Mark 45 5-inch gun during a live-fire exercise. Mason is prepared to respond to contingences and to defend U.S. forces and interests in the region. (U.S. Navy photo by Mass Communication Specialist 3rd Class Lasheba James/Released)