Recovery operations are underway after an American Airlines flight and an Army helicopter collided and crashed into the Potomac River near Ronald Reagan Washington National Airport on Wednesday night.

An American Airlines flight crashed into a U.S. Army Black Hawk Helicopter over the Potomac River as it approached Ronald Reagan Washington National Airport.

Investigators have recovered the flight recorders—also known as black boxes—from both the commercial jet and the military helicopter involved in the mid-air collision near Reagan National Airport in Washington,