Air traffic controller audio TIME retrieved from LiveATC.net revealed what happened moments before the collision. The tower had cleared the plane for landing on Runway 33, but just seconds before the crash, an air traffic operator asked the helicopter—with radio call sign PAT 25—if the commercial jet—referred to as the CRJ—was in sight.

Air traffic controllers twice alerted the crew of a U.S. Army helicopter to the presence of an inbound American Airlines jet, with the first warning issued two minutes before the aircraft collided Wednesday night near Reagan National Airport,

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

Families and friends of those who lost loved ones in the deadly American Airlines and Army helicopter collision are sharing tributes online in memory of the crash victims.

Investigators have announced that the black box from the Army Black Hawk helicopter that collided with a commercial jetliner has been recovered.

The Army Black Hawk helicopter that collided with a passenger plane near Washington, D.C., was drilling mysterious 'continuity of government' plans.