The design that Boeing made for the Air Force in 1963 was not used for the 747. However, Boeing made some new things for the Air Force which were used in the 747. The first design had two full decks. However, in 1966, this was changed to only one deck. The cockpit was put above the deck, which made a "bulge". There was a small space behind the cockpit which people could sit in. At first, it was a "lounge" area with no seats.