What a night!

Well i worked the night shift again last night and got the shit scared out of me! We were talking about different things that have happened up there and how the nurse should lock the doors at night. Well we get up and go back inside, because I had to go to the bathroom. Well while in the break room's bathroom I heard something, it sounded like something was trying to push the window up in the break room. I get done and look there was nothing there, I start washing my hands and I hear it again I look and nothing. OK Liz must be playing a joke on me. So I walk Liz, but you didn't scare me. They look at me and say "what?". I tell them while watching Liz what happened. They tell me a resident said the same thing happened to them. OK this is getting weird. We ignore it then when I was about to go join Liz and a resident outside to smoke, I see them come running in saying someone was hiding behind the fence. They call the cops out there and everyone is on lock down and buddy system is enforced. Finally Frank gets there to take me home. It was an interesting and scary night!