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, Mumbai of the islands of Bombay by force, naming it Sião. The Portuguese gave the Jesuit priests the sole ownership of some of these islands. The Jesuits then built a chapel on the hill near the present-day railway station and named it after Mount Zion (Sion) in Jerusalem. It's in South Mumbai. Sion shares its name with a railway station on the Mumbai suburban railway on the Central Railway line. Sion also has a bus station. It is in the central line. Sion is also a home to many educational institutes, namely: Sion, Mumbai Sion is a neighbourhood of Mumbai. The