The room can only be accessed while watching a saved Film in Theater. Right after the Pelican at the beginning lands, and when John-117 begins to jump out of the Pelican, you may be able to see a glimpse of the room. To get inside, you need to immediately pause the Film, and fly up as high as you can against the mountain on the right side of the Pelican. Once you are against it, all you have to do is quickly tap Y twice. You will then be sent straight into the room where you are free to fly around. The room is actually the bridge of the Assault Carrier Shadow of Intent, commanded by Rtas 'Vadum. The room is seen in three cutscenes: The one between Floodgate and The Ark, the one at the beginning of The Ark, and the one at the end of the game, where the Arbiter and Rtas 'Vadum are discussing