I was talking to one supervisor about some basic problem I was having, and another supervisor chimed in mockingly, because it related tangentially to a problem we had months ago. It was in no way really related, he just wanted to try to prove he was right about a previous subject, which he wasn't, he actually misunderstood the problem. When I told him that, he made a veiled threat to me. Basically it was a movie line that's said right before a killing, so he threatened to kill me. I reported this to the other leads and emailed my managers, but he's still here and I'm stuck at work with this guy who threatened to kill me, I was told my managers will talk to me about it later but I don't think it's right to be stuck at work with a guy who threatened me and I reported. Is there anything I can do other than complain? Michigan based, but on tribal land.