Sean Duffy’s first big test as secretary of the Department of Transportation came just one day after he was sworn into office. A commercial jet carrying 64 people collided in midair with an Army helicopter carrying three servicemembers Wednesday night near Washington,

CBS News confirmed only one air traffic control worker was managing the helicopters when the crash between a military helicopter and passenger plane occurred in Washington D.C. That is a job normally done by two people.

The National Transportation Safety Board will be holding its first briefing into the investigation of the deadly American Airlines plane crash in Washington, DC. Click to watch.

National Transportation Safety Board Chair Jennifer Homendy said Thursday at a press conference that “we look at facts on our investigation and that will take some time.”

No chute or slides appeared to be deployed from the American Airlines plane, according to J. Todd Inman, a member of the National Transportation Safety Board. “It was a very quick, rapid impact,” he said.

The National Transportation Safety Board will lead an investigation, hoping to determine what happened and prevent any similar accidents in the future. There is no reason to believe that the dramatic changes to the federal government made by the Trump administration,

Transportation Secretary Sean Duffy had been sworn in just hours before the deadly midair collision of a plane and helicopter near Washington, D.C.

The National Transportation Safety Board was scheduled to provide an update on Thursday on the deadly airplane-helicopter crash over Washington, D.C. Watch live at 2:45 p.m. on Thursday, Jan. 30 in the video player above.

President Donald Trump questioned the Army helicopter in the fatal crash for flying at the same height at an American Airlines plane.