Interstate 80 diverted while officials investigate crash on westbound tunnel involving ‘multiple passenger and commercial vehicles.’

The National Transportation Safety Board has released its final report on a 2023 train derailment in southern Colorado that killed a man who was driving a truck under a rail bridge.

The National Transportation Safety Board gave an update on its investigation into the deadly midair collision between an American Airlines plane and a Black Hawk helicopter.

The National Transportation Safety Board is also studying whether the pilots of the Black Hawk in last month’s collision were seeing accurate data about the helicopter’s altitude.

The National Transportation Safety Board said Saturday it had opened a safety investigation into the crash that took the lives of at least two people in a multi-vehicle crash inside a southwest Wyoming highway tunnel.

Officials at the National Transportation Safety Board said they are looking into the possibility that bad data caused inaccurate readings for the Black Hawk helicopter pilots in the January D.C. crash.

National Transportation Safety Board (NTSB) chair Jennifer Homendy provides an update Friday into the investigation of the Jan. 29 fatal crash between an Army helicopter and an American Airlines jet.

That transmission was interrupted — it was stepped on,” said Jennifer Homendy, chair of the National Transportation Safety Board.

The National Transportation Safety Board said the helicopter’s cockpit voice recorder didn’t capture key directions from air-traffic control and is investigating whether the crew might have seen a different altitude on the flight instruments.

NBC News' Erin McLaughlin summarizes key takeaways from Friday's briefing by the National Transportation Safety Board regarding last month's deadly plane crash over the Potomac River.