Washington DC plane crash latest: Investigators vow to 'leave no stone unturned' in probe of deadly mid-air collision
The National Transportation Safety Board promised to “leave no stone unturned” in its investigation into the deadly collision between the Army Black Hawk helicopter and an American Airlines regional ...
Here's what is known about the deadly collision between a passenger jet and Army helicopter
A jet with 60 passengers and four crew members collided with an Army helicopter while approaching Ronald Reagan National ...