“My preoccupation is with the possibility that the meteor hits the cancer sufferer...”
I would rather the meteor strike the robber, thus saving the clerk...and relieving you of the necessity of getting involved. Not to mention, if you’re quick enough on the draw, you pull out your camera and get a shot of the meteor strike. That would be worth it’s weight in gold...which you could share with the clerk for her operation.
Excellent!
And, with a little fancy footwork, one could use your sudden display of that fancy smart-phone to lure any reasonable thief right into the path of the meteor!
Click, BOOM!
I love it when a plan comes together.