The collision involved a PSA Airlines Bombardier CRJ700 airplane and a Sikorsky H-60 military helicopter and killed 67 people.

It was expected to begin at 4 p.m. but has since then been rescheduled for 5:30 p.m. Once it begins, a streaming of the presser will be added to this story.

The midair collision at Reagan National Airport on Wednesday night has presented Sean Duffy with a major crisis just hours after he was sworn in as secretary of transportation.

A United States Army UH-60 Blackhawk helicopter crashed at approximately 9 p.m. while performing a training mission near Ronald Reagan

NBC News is live with a special report as the National Transportation Safety Board holds another briefing on the D.C. plane crash.

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.

Kentucky native J. Todd Inman is helping oversee the investigation into the Washington D.C. plane crash for the National Transportation Safety Board.

Remains of 41 of the 67 victims of the mid-air collision between American Eagle Flight 5342 and a military helicopter near Ronald Reagan Washington National Airport have been recovered so far, officials confirmed Friday.

Two of Reagan National Airport’s air traffic controllers were doing double duty Wednesday night, according to a government report.

A military helicopter and passenger jet collided midair on Wednesday night near Reagan Washington National Airport, according to the Federal Aviation Administration. Here's what we know.