Fridge Horror: In the NES version of Area 5, one of the communication rooms has a spot where you can wiretap. If you choose to, you get words on the screen, but no picture of the person's face like there usually is. It says the following:
"Where am I? Who is awakening me?"
Playing through it again, it's implied that the voice was either a groggy, disoriented Joe, or Hitler.