20020-N-NC885-1177 NAVAL BASE SAN DIEGO (May 20, 2020) Gas Turbine System Technician (Mechanical) Fireman Zachary Melendez, from Philadelphia, marks sheet rubber with a grease pen in order to cut the amount needed to patch a ruptured pipe during a flood response exercise onboard the Arleigh Burke-class guided missile destroyer USS Sterett (DDG 104) while underway conducting a composite unit training exercise (COMPTUEX) as part of the Nimitz Carrier Strike Group (CSG). COMPTUEX is an intensive exercise designed to fully integrate units of the CSG, while testing its ability as a whole to carry out sustained combat operations from the sea. (U.S. Navy photo by Mass Communication Specialist Seaman Apprentice Drace Wilson). (U.S. Navy photo by Mass Communication Specialist Seaman Apprentice Drace Wilson/Released)