It raises fresh questions as to why the two aircraft collided nearly head-on with each other killing all onboard.

The National Transportation Safety Board will hold a briefing on its investigation into the crash between an American Airlines plane and a U.S. Army Blackhawk helicopter. You can watch live below ...

As investigators look into the cause of Wednesday night's plane crash, pilots share their initial take on the collision.

Latest news and live updates after an American Airline jet collided with a Black Hawk helicopter over the Potomac River.