GULFPORT, Miss. (May 3, 2010) Emergency ship salvage equipment from the Supervisor of Salvage and Diving division of Naval Sea Systems Command is staged in Gulfport, Miss. to support recovery efforts from the Deepwater Horizon oil spill. Deepwater Horizon was an ultra-deepwater oil rig that sank April 22, causing a massive oil spill threatening the U.S. Gulf Coast. (USN) 10Spill0503-N-6141B-001