Horrifying new video shows Black Hawk's mid-air crash with American Airlines jet

A horrifying video showing the moment a US Army Black Hawk helicopter smashed into a passenger jet over Washington, DC , has been released, as investigators reveal the final words of the doomed crew. The footage, captured by CCTV and played at the start of a three-day National Transportation Safety Board (NTSB) hearing, shows a bright flash lighting up the night sky above the Potomac River.