Here is a glimpse at some of the current stages of my fictional 1:200 Scale Denver Northfield Intl. Model Airport. It operates many mainline domestic carriers that also operate to Denver Intl. Airport irl. (American Airlines, United, Southwest, Frontier, AirTran Airways (if it wasn't acquired by Southwest) and Delta.) It also serves a variety of International carriers including PanAm, Saudi Arabian (now Saudia), Trans World Airways (TWA), and many more! It is also a cargo hub for carriers such as FedEx and A-Star Air Cargo. UPS and DHL lease cargo gates occasionally and continue to grow a presence here.