Good insight! For 18 years I was in the position of giving performance evaluations, and I can tell you that people do know when they are about to get a poor evaluation. You can see it in their face, their language and their body language. I never have let fear of an employee stop me from delivering a deserved poor review, but, believe me, it sure made me situationally aware, since that workplace was a "gun free zone".The guy obviously had a history of workplace problems, probably borderline psycho, he thought ahead enough to bring his shotgun to work that day knowing his eval was going to occur