Audio and video from the collision of American Airlines Flight 5342 and an Army helicopter over the Potomac revealed some clues about the aircrafts’ last moments.

A gasp can be heard on air traffic control audio as an American Airlines plane and a US Army helicopter collided in Washington DC on Wednesday, 29 January. American Eagle flight 5342 – carrying 64 people – and the military Black Hawk helicopter – carrying three people – crashed at approximately 8:53 p.