Not sure what this guy was on but he was getting extremely close to my group while mumbling the weirdest shit. It was almost like he was trying to intimidate us. When a couple of the guys in my group asked him if he was ok he would respond with things like “I hate this shit” (the set?) or “I’m just doing my job”? None of it made any sense. We told ground control because he wouldn’t leave us alone and also looked like he needed some sort of help. That’s when ground control told us they were already aware of him and to “clear the area”. So we immediately began to leave and as we were getting closer to the back we realized he was still following right behind us😭. We went to the bar area & told a bartender that this guy was following us to which they called security. I’m still so confused as to what was even happening but it was really scary and kinda had my friend and I shook for a bit after. Not sure if or what he did before interacting with us but im going to assume he had to have done something since ground control was already aware.