Damage Controlman 3rd Class Darlan Davis, from Detroit, right, and Damage Controlman Fireman Karl Bisuelan, from Riverbank, Calif., fix a relief valve on a primary air supply pack aboard the Arleigh Burke-class guided-missile destroyer USS Rafael Peralta (DDG 115) Nov. 21, 2019. Rafael Peralta is underway conducting routine training in the Eastern Pacific Ocean. (U.S. Navy photo by Mass Communication Specialist 2nd Class Jason Isaacs)
