Felonious assault sounds like the type of thing that won't even get the guy jail time. What about attempted murder? Seems like that's what you are attempting to do if you shoot someone.

A couple years back we had a customer type in an email that he would shoot one of our techs if they didn't fix his machine that day. Instead of contacting the police, he is still a customer of ours somehow.

Crazy world we live in.