Sixty-four people aboard a commercial airliner died Wednesday after it collided with a military helicopter midair near Reagan Washington National Airport. Both the American Eagle jet and Army Black Hawk are in the Potomac River.

The Black Hawk helicopter that crashed into an American Airlines flight was alerted to the plane’s presence by air control twice.

Video recorded by bystanders shows the harrowing moment when the 2 aircraft crashed into one another, causing an explosion over the nation's capital.