Here in Oz yesterday, Tracy Grimshaw, a TV personality, was tossed from her horse onto her head, was unconscious for 30 mins, taken to hospital (by a chopper).
The horse had been scared by a lawnmower.
There will probably be no action taken against the user of the mower, but imagine the fuss if it had been a helicopter that scared the neddy. No mention of whether the horse put in a noise complaint against the rescue helicopter when it arrive to cart Tracy away. The lawnmower was put down.