190723-N-NU281-1041 PACIFIC OCEAN (July 23, 2019) Lt. Chris Cedros, chief engineer aboard the Arleigh Burke-class guided-missile destroyer USS Michael Murphy (DDG 112) operates the centerline polaris in the pilot house. Michael Murphy is deployed to the U.S. 4th Fleet area of operations. (U.S. Navy photo by Mass Communication Specialist 2nd Class Justin R. Pacheco/Released)