HOUMA, La. -- Dispersant is sprayed over oil off the coast of Venice, La., May 5, 2010. The dispersant is being used in efforts to halt the spread of oil throughout the Gulf of Mexico after the April 20 explosion of the mobile offshore drilling unit, Deepwater Horizon. Coast Guard video by Petty Officer 3rd Class Stephen Lehmann. For more information, please visit www.gocoastguard.com.