This data point is one of several key mysteries investigators are exploring as they seek to explain what caused the nation's ...
The crew of the Army Black Hawk helicopter involved in the deadly collision with a jetliner had thousands of hours of flight ...
The U.S. Army helicopter that collided with a passenger jet in Washington was being operated on a training flight by a ...
Without evidence, Trump blamed air traffic controllers, the helicopter pilots and Democratic policies at federal agencies for ...
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