NEW ORLEANS - Michael Beirne, a land negotiator for BP, swears in before the joint investigation board at the fifth session of hearings into the Deepwater Horizon explosion here, Oct. 6, 2010. The Coast Guard and the Bureau of Ocean Energy Management, Regulation and Enforcement (BOEM) are co-chairing the fact-finding investigation launched to determine the cause of the initial incident and fire aboard the mobile offshore drilling unit (MODU) Deepwater Horizon. U.S. Coast Guard photo by Petty Officer 3rd Class Elizabeth H. Bordelon.