I work at the local UPS Store and in the years I've been working there I have experienced a handful of strange occasions that I can't logically explain. One of the first times, a coworker and I were sat inside the office and suddenly heard a loud crashing noise from our mail room as if all of the shelving fell down. We both got up to investigate but found everything still completely in place and intact. In another instance, I was alone and preparing to close down for the day when a panel for a ceiling light fell down just as I was walking by. It was close but it slightly missed me and slammed on the ground. The most strange part about it was we had recently undergone an inspection which included checking on all of the light fixtures and everything was deemed up to date. There is one occurrence that has been repetitive as well. We have a security system installed that audibly alerts when the front door or back door opens and we mostly use that as a notification that a customer has entered in the front. Multiple times I or one of my coworkers have heard the notification go off without anybody entering through either door and we've had this happen even after the store is closed and the door is locked. I'm not going to confirm that this is the activity of a ghost but I do believe in them and would not be surprised if what we've encountered turned out to be a genuine ghost.