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US National Transportation Safety Board
Seal of the United States National Transportation Safety Board.svg
Official seal and emblem
Agency overview
FormedApril 1, 1967[1]
Preceding agency
JurisdictionFederal government of the United States
Headquarters490 L'Enfant Plaza SW, Washington, D.C.
Employees~400 (2014)
Annual budgetUS$>100 million (2013)
Agency executives
Websitewww.ntsb.gov

The National Transportation Safety Board (NTSB) is an independent U.S. government investigative agency responsible for civil transportation accident investigation. In this role, the NTSB investigates and reports on aviation accidents and incidents, certain types of highway crashes, ship and marine accidents, pipeline incidents, and railroad accidents.[2] When requested, the NTSB will assist the military and foreign governments with accident investigation.[2] The NTSB is also in charge of investigating cases of hazardous materials releases that occur during transportation. The agency is based in Washington, D.C. It has four regional offices, located in Anchorage, Alaska; Denver, Colorado; Ashburn, Virginia; and Seattle, Washington.[3] The agency also operates a national training center at its Ashburn facility.[4]