PACIFIC OCEAN (June 21, 2021) Aviation Boatswain’s Mate (Fuels) Airman Deion Mesa, from Tahlequah, Okla., raises a disc stack to clean a fuel purifier aboard the amphibious assault ship USS Tripoli (LHA 7), June 21, 2021. Tripoli is underway conducting routine operations in U.S. Third Fleet. (U.S. Navy photo by Mass Communication Specialist Seaman Melvin Fatimehin)