The NTSB is an independent federal agency responsible for investigating all civil aviation accidents as well as serious incidents in the U.S. involving other modes of transportation, such as railroad disasters and major accidents involving motor vehicles, marine vessels, pipelines and even commercial space operators.

Federal leaders are launching an investigation into the deadly plane crash that happened late Wednesday night in Washington, D.C. President Donald Trump says his administration is working to get answers and he's suggesting diversity policies may be to blame.

"When you have statements in the press, very forceful, coming from the highest authority in the United States, people may be reluctant to tell their stories."