There seem to be at least three different classes of Security Zeppelin. A smallest version is roughly the same size as the First Lady and seems to be a militarized version of the many civilian Zeppelins seen when Booker first arrives in Columbia. This Zeppelin has a single deck with a large hatch in the floor possibly used to deploy Pods containing Motorized Patriots. At the front of the airship is a cabin that contains the ship's controls. The second class of Security Zeppelin is nearly twice the size of the smallest version and has at least two decks. The main deck has the ship's bridge at the front with a large open area in the middle. At the back is the craft's power plant which can be destroyed. Above the power plant is hatch leading to another deck, but there is no information on thi