of 26 hours transporting personnel and humanitarian relief supplies. The aircraft carrier and its battle group were moved to the east coast of Honshu. As well as the group's own helicopters, the Ronald Reagan served as a refueling platform for Japan Self-Defense Forces helicopters. C-2 Greyhound aircraft assigned to VRC-30 and attached to CVW-14 and CVW-5 ferried over 100 tons of food, water, blankets, clothing, and medical supplies from NAF Atsugi to USS Ronald Reagan for distribution by helicopter to local sites in Japan. Yokota Air Base was used in the aftermath of the earthquake as a landing field for commercial flights as Tokyo Narita Airport was closed. The Navy helicopters based at Naval Air Facility Atsugi and elsewhere were made available for search and rescue immediately after the tsunami, including searching off-shore debris fields and later assisted with food drops. P-3 Orion aircraft were used to do damage surveys. Amphibious landing craft and utility landing craft (LCUs) were used to deploy U.S. and Japanese troops and supplies to areas where docks were damaged. Japan electrical company trucks were moved by U.S. LCUs from , notably to Oshima Island. The destroyers and were off the Bōsō Peninsula at the time of the earthquake, and their helicopters were made available for search and rescue. The landing ships and , with the embarked 31st Marine Expeditionary Unit from Okinawa, were moved from the Sea of Japan to the east coast of Japan. , which had just arrived in Singapore at the time of the earthquake, was loaded with relief supplies and prepared to sail for Japan. , an amphibious dock ship, embarked two MH-53E Heavy Lift Helicopters assigned to HM-14 DET 1 stationed in Pohang South Korea. The entire DET was on board Tortuga less than 18 hours after the earthquake and tsunami hit. Tortuga transported 800 Japanese civil defense workers from Hokkaido to Honshu with 90 vehicles. Military Sealift Command ships also took part in the operation by transferring relief supplies and fuel to other supporting ships. The ships that took part in the operation were USNS Carl Brashear (T-AKE 7), USNS Pecos (T-AO 197), USNS Rappahannock (T-AO 204), USNS Matthew Perry (T-AKE 9), USNS Bridge (T-AOE 10). , which was stationed at U.S. Fleet Activities Sasebo, arrived at Hachinohe, Japan with Explosive Ordnance Disposal Mobile Unit 5 and Underwater Construction Team 2 to clear wreckage from a local commercial channel.