You can see into three different states from the mountaintop restaurant's 'observation deck'. [=a platform built so that people can see or watch something]
We heard the captain shout “'All hands on deck'!” as waves crashed over the boat's bow.
“He seemed a little weird.” “Yeah, he's 'not playing with a full deck'.”
(..) Parker, I don't want any heroics out of you, all right? Catch it, put it in the air lock, get rid of it. The channels are open on all decks. I want you to communicate and keep in touch at all times, all right? Let's go. I thought you fixed module. (..)1979 Alien