On June 3, 2010, the federal government sent BP a preliminary bill for $69 million to recoup costs incurred as a result of the oil spill in the Gulf of Mexico. The costs were incurred for federal agency support of operation of ships, aircraft and boats and support of environmental assessment/monitoring; for Department of Defense support of salvage and removal efforts; for National Guard activation and deployment in Louisiana, Mississippi, Alabama and Florida; and for state cleanup and environmental assessment efforts. The government will bill BP regularly for costs related to the spill according to the Deepwater Horizon Unified Command, the government and industry task force managing the spill response.