On the subject of Grandpa, linked to above--old dude didn't spell it out, but "Grandpa" actually is the one who is on a shooting spree-he was the only one who fired shots, both of the people he shot were running away from him, it looks like he shot at people other than the robbers, and one of the people he shot seems to be unarmed and trying to crawl away while "Grandpa" is emptying his revolver.

I'm not feeling any safer because guys like him are out there...