Four men and not one of them with a gun - what's the world coming to . . .
Or bear spray. I'd at least carried the 45 Colt with hardcast or the Glock 40 also with hardcast.
As terrible as this is for the guy mauled, it's not the bear's fault. That's what they do, and if humans venturing into their habitat don't know that and come prepared, they shouldn't be there.