Audio has been posted on social media which purportedly reveals the conversation between the control tower at Ronald Reagan National Airport (DCA) and an Army Black Hawk helicopter shortly before it ...

In order to enable safe flight, airspace is split into categories ranging from very tightly controlled areas around airports ...

Pilots must obtain clearance from Air Traffic Control (ATC) to enter and ... It is a clear night, the lights on the plane were blazing, why didn’t the helicopter go up or down, or turn.” ...