If you’re a skydiver preparing to jump out of a plane then the last thing you either expect or want to happen is your plane crashing into another in mid-air.

And yet this is exactly what happened in the skies above Wisconsin in the United States yesterday. Amazingly, we have footage of the whole incident.

One set of skydivers was preparing to jump when the weight of them hanging from the wing caused their plane to hit another. A huge fireball erupted, and one of the planes went down.

Thankfully the pilot escaped and all the skydivers jumped just a little earlier than they had planned to do so.