Rocketry In Scotland
I've not been involved in amateur rocketry for some years (to be frank, I couldn't get a ride in one, so decided that I preferred aeroplanes), but still have a lot of friends who are. They've been enthusing about this event for months.
As Jock says, these are serious players building some seriously big rockets. What he didn't say is that the nature of the vehicles is that they go up very quickly, then spend quite a long time coming down under various parachute systems. So the real risk to a light aircraft there is not so much being shot down, as being landed upon.
G