"KE4ODD" wrote
A better question would be " How many swings with a baseball bat would
your head take before in popped open like a melon?"

Only 1, but you would have to find that head among 300 million others, and
then manage to get close enough to take a swing - and survive.

Another interesting question. How many oil refinery fires do you think
could be cuased by flying a radio controlled aircraft into the sides of
refinery oil tanks?

It's an interesting question isn't it?