Dan,
If I could get my money back then I would, but that might be slightly unfair on my school
Seriously though, of course I was taught about teetering-head, sloping-ground et al, but you'll notice that the SH-60 doesn't have a teetering head and that you would not deliberately land your helicopter on sloping ground when there was someone under the disc! That is why I asked what had happened.
What I was meaning to say was that I did not know that wind gusts would cause the disc to move to such an extent that it could strike someone who was presumably
already ducking beneath it.
I should have worded my post differently, my bad.