In the United States the Deepwater Horizon investigation included several investigations and commissions, including reports by the USCG National Incident Commander, Admiral Thad Allen, the National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling, Bureau of Ocean Energy Management, Regulation and Enforcement (BOEMRE), National Academy of Engineering, National Research Council, Government Accountability Office, National Oil Spill Commission, and Chemical Safety and Hazard Investigation Board.[59] The Republic of the Marshall Islands Maritime Administrator conducted a separate investigation on the marine casualty.[2] BP conducted its internal investigation.