BREMERTON, Wash. (Aug. 5, 2020) Chief Aviation Boatswain's Mate (Handling) Christina Duvall, left, from San Diego, briefs Rear Adm. Stephen D. Barnett, commander, Navy Region Northwest, on the use of an Open Bay Fire Fighting Tool (OBFFT) on the flight deck of Nimitz-class aircraft carrier USS Carl Vinson (CVN 70). An OBFFT is used by the ship's crash and salvage team to combat aircraft fires. Carl Vinson is currently undergoing regularly scheduled maintenance pierside in Bremerton, Wash. (U.S. Navy photo by Mass Communication Specialist 3rd Class Christian M. Huntington)