back woods wrote:
There's no reason to implement a specific system. Cougar attacks are quite rare. Bee stings kill people much more often. So does lighting. Realistically, these guys had terrible luck.
I've never heard of bears attacking runners. Black bears generally try to avoid people, and running into one is not as scary as most people seem to think.
By far the most dangerous, scary animal one is likely to encounter in the woods is a man.
Ordinary accidents / crime are not reported on national media. No need to over-react to individual incidents.