Boeing [NYSE: BA] and Qatar Airways held a signing ceremony at the Dubai Air Show today to mark the airline's order for 30 787 Dreamliners and five 777 Freighters. The airplane deal is valued at over $6.1 billion at list prices. The airplanes were previously listed on Boeing's Orders & Deliveries Web site as unidentified. A 787 Dreamliner (top) and 777 Freighter are depicted in Qatar Airways livery in this artist's rendering.