Sion Airport PC-6, Pilatus PC-7, Pilatus PC-9 and Pilatus PC-21 as well as helicopters it uses Sion intensively with the fighter jets F/A-18 and F-5 Tiger. It is the home base of the militia pilot unit Fliegerstaffel 19 Swans with F-5E. Sion Airport is, at both ends of the runway, equipped with retractable arresting gear devices (used by the F/A-18 and in case of a problem by the F-5). Because of the redimension of the Swiss Air Force it is planned that the Air Force will leave Sion after 2017 and Sion will be used by civil aviation only, acting only as
Sion, Switzerland the "Bibliothèque municipale de Sion", the "HES-SO Valais Médiathèque santé-social" and the "HES-SO Valais, Domaine Sciences de l'ingénieur". There was a combined total () of 690,513 books or other media in the libraries, and in the same year a total of 294,320 items were loaned out. Sion has two high schools (colleges) Sion is also host to the : The HES-SO Valais offers education in Sciences, Engineering, Economics, Information Technology and Health Sciences. Sion is situated on the main railway line and the motorway, and also has an airport (Sion Airport). From the , 21,220 or 78.1% were Roman Catholic,