180521-N-ET513-0005 U.S. 5TH FLEET AREA OF OPERATIONS (May 21, 2018) The Arleigh Burke-class guided-missile destroyer USS Laboon (DDG 58) fires its Mark 45 5-inch gun during a live-fire exercise. Laboon is deployed to the U.S. 5th Fleet area of operations in support of maritime security operations to reassure allies and partners and preserve the freedom of navigation and the free flow of commerce in the region. (U.S. Navy photo by Mass Communication Specialist 3rd Class Kallysta Castillo/Released)