Ключевые слова: aeronautics, air, air navigation, air traffic, air traffic control, air traffic controllers, airplane, airport, airspace, approach, aviation, blue, business, campus, center langen, civil, civilian, control, corporate headquarters, departure, deutsche flugsicherung gmbh, dfs, editorial, er26138, eurocontrol, federal, flight, frankfurt, german, german air traffic control, germany, gmbh, government, headquarters, hesse, long, military, navigation, of, passenger, pilot, provider, radar, republic, safety, security, service, services, sky, surveillance, technology, tower, traffic, transport, transportation, travel,