FLEET ACTIVITIES SASEBO (Feb. 14, 2024) Capt. Michael Fontaine, commander of Fleet Activities Sasebo (CFAS), climbs down a ladder into the I-4 fuel tank at CFAS’s Iorizaki fuel facility, Feb. 14, 2024. Fontaine performed inspections of I-4, the Department of Defense’s largest fuel tank in the world holding over 420,900 barrels of oil, during the tank’s 20-year cleaning cycle to maintain structural integrity and readiness. (U.S. Navy photo by Mass Communication Specialist 3rd Class Sophia Bumps)