"Yes, but not well," and "kind of."
Dude was quiet, generally affable, but had a temper. He showed it to a few people, though, and they warned me to stay away from him.
When he finally had a freakout at home while "cleaning his gun", he didn't kill anybody, and he didn't pull the trigger, and charges were eventually dropped (stockholm syndrome) so I'm not sure it qualifies as a rampage, either. But domestic violence is a bitch.