Though partially funded by NASA, it is still a private site. Therefore, before downloading any materials for use, you need to ask permission. An airport is the site and installation for the takeoff and landing of aircraft.
Modern airports have runways, long corridors of asphalt or concrete.
Runways of 14,000 feet have been built to accommodate four-engine jet aircraft capable of carrying 250 or more passengers. Air traffic controllers, aided by radar and other electronic navigational devices, direct incoming and outgoing aircraft from airport control towers and control centers located some distance from the airfield. Passenger and cargo terminals have grown steadily larger and more complex with the Increase in the size of airports. In some airports, special ground transit systems have been installed between parking areas and terminals. Airports usually are operated by a director or manager responsible either to the private owners of the airport or to the local government authorities.