Bigwindy,
I think it would take more than a light aircraft to cause a big bang (have you seen the wall thickness of a reactor shell) but it would still make one hell of a nasty mess. Strangely enough, those danger areas on your chart are not there just for fun people.
Skylark4,
It seems that people don't appreciate the following :
a) a steel cable WILL cut your wings off.
b) a parachutist WILL knock your wings off
c) a glider head on is EXTREMELY difficult to see
Back in the days when RAF Brawdy was active, we had a Hawk come through the (800') circuit at 500'. Scared the living daylights out of a poor guy in a C150. Ask anybody who flew in East Anglia when the A-10's were there what a pain they were.
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When the wheels stop turning you're high enuff. CubTrek. To slowly go...