When my son was in the Boy Scouts we went down to the coast and spent the night of the USS Lexington a old WW2 aicraft carrier.As a parent we were suppose to keep a night watch on our group so a friend and I an another parent and one of the guys who worked there went walking aound the ship at night.The guy who worked there decided to show us the rest of the ship,places where most people don't get to go,while walking down one of the very narrow hallways we here footsteps and we all saw something like a shadow/ghost walk by us with a tray with some coffee cups on it,the really weird thing is that we all moved out of the way when it walked past us and we all had goosebumps on us afterwards.