With these sort of things when things start to go wrong they can go wrong very quickly and before people have time to react. Mid-air collisions were one of the unfortunate things that happened during WW2. With this accident once the authorities have got to the bottom of exactly what happened, hopefully, they can make it less likely to happen in the future.

In general terms and not saying that it happened in this case, for want of a better way of putting it, there can on occasions, I believe, be an element of "showing off" at airshows. Unfortunately luck can sometimes run out.
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