Footage of the train derailment at Chicago's O'Hare airport shows just how lucky it was that no one was killed in the incident.
The eight-car CTA Blue Line train mounted the platform and careered up an escalator resulting in injuries to 32 people.
Thankfully the crash happened in the early hours of the morning when the airport was at its quietest - only two people can be seen milling about in the vicinity of the platform.
If the platform in view had been filled with people it would been an altogether more horrific story...