The radar will not report echo tops below 5,000 feet ... Thanks to a collaboration between the National Weather Service (NWS) and the FAA, the data for all 45 TDWRs is now available in real ...

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 staffing at the air control tower at Reagan National Airport was "not normal" when an American Airlines plane and Army helicopter collided on Wednesday night, a report shows.