This time-lapse map shows US air traffic slowing to a near-standstill after the massive IT outage
But it had one of its most dramatic effects on US commercial flights. A time-lapse map shared by Colin McCarthy ... Time on ...
DC plane crash: Mapping the flight paths that put jet and helicopter on collision course
The collision occurred in airspace that is difficult to navigate. Flight data, video and air traffic control audio show how the tragedy unfolded.