An American Airlines regional jet went down in the Potomac River near Ronald Reagan Washington National Airport.

WUSA9 spoke with Todd Yeary, who worked in air traffic control in Chicago on 9/11, about what it is like to communicate with aircraft.

Sixty-seven people died in a collision between a Bombardier CRJ700 regional jet operated by PSA Airlines and a military Black Hawk helicopter.

An Army Black Hawk helicopter collided with a regional jet near Ronald Reagan Washington National Airport on Wednesday evening, U.S. officials confirmed to ABC News.

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

A regional jet carrying 64 people collided with an Army Black Hawk helicopter. Reagan National Airport grounded all flights.

The deadly collision of an American Airlines regional jet and a U.S. Army Black Hawk helicopter late Jan. 29 in Washington, D ...

The cellphone footage provides the clearest angle yet of Wednesday’s tragic midair collision in Washington, DC, that killed ...

An American Airlines regional jet went down in the Potomac River near Washington, D.C.'s Ronald Reagan Washington National Airport after colliding with a U.S. Army Black Hawk helicopter on Wednesday ...

The catastrophe immediately raised questions about the close proximity in which helicopters and jetliners soar over the busy ...

Americans turn to their leaders for solace in times of mourning. Donald Trump has used national tragedies to make political points or demean critics.