There are two major dogfight areas. The largest room has four exits. There are two short staircases that lead to two of the exits. One of the staircases also leads to an elevator that takes you to an upper platform in the room and the third exit. The fourth exit is below this platform and leads down a long hall.
Rails happen here.
In the large room, the far staircase opposite the other three exits will lead you down a hall that takes a right turn into a wider hall. That wider hall will lead you to the second dogfight area. We will get back to this second dogfight area. From the main room, the second staircase exit will take you down a hall that takes two left turns and a right turn on to a platform over an open area. To the side of this room, there is a dark room.