I'm not entirely sure I want to see all the near-misses in full 3D glory.

https://planefinder.net/3D/#AR

reddit has an image of it in action. impressive.

https://www.reddit.com/r/interestingasfuck/comments/7d3jq5/live_air_traffic_over_heathrow_airport_on_your/

This is going to make for some amazing flight simulators...