200511-N-FP334-1142 PACIFIC OCEAN (May 11, 2020) Gas Turbine Systems (Machinist) Fireman Joseph Simontin, from Highland, Calif., inspects a fuel sample during a replenishment-at-sea aboard the Arleigh Burke-class guided-missile destroyer USS Ralph Johnson (DDG 114) during a composite training unit exercise (COMPTUEX) as part of Nimitz Carrier Strike Group (CSG). COMPTUEX is an intensive exercise designed to fully integrate units of the carrier strike group, while testing a strike group's ability as a whole to carry out sustained combat operations from the sea. (U.S. Navy photo by Mass Communication Specialist 3rd Class Anthony Collier/Released)