Radar images of the army helicopter and passenger plane that crashed over DC have revealed that the air system warned of a "collision alert" moments before the crash.

The collision occurred in airspace that is difficult to navigate. Flight data, video and air traffic control audio show how the tragedy unfolded.

The National Transportation Safety Board provided an update on Friday into the investigation of the deadly Army Black Hawk ...

Flight data, video and air traffic control audio reveal details leading up to tragedy that claimed a passenger jet out of Wichita.

The three-person helicopter crew was on a "routine annual retraining of night flights on a standard corridor for a continuity of government mission" when it crashed ... the flight path of the ...