GULFPORT, Miss. (April 30, 2010) Longshoremen and personnel assigned to the Supervisor of Salvage and Diving division of Naval Sea Systems Command stage oil containment booms. The Supervisor of Salvage and Diving division has sent 66,000 feet of inflatable oil booms, skimming systems, related support equipment and personnel to support clean-up efforts for 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. (U.S. Navy photo by Mass Communication Specialist 1st Class Demetrius Kennon/Released)