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, Netherlands a new residential area in Sion. Sion, Netherlands Sion is a hamlet in the Dutch municipality of Rijswijk. It is located on the border with Delft, and has a population of about 210. In 1345, the monastery "Sancta Maria in Monte Sion" was built in this area. It was demolished on the orders of the city of Delft in 1572, when Spanish troops approached the city, and was never rebuilt. In the 17th century, an estate was built on the grounds of the former monastery, and in the 19th century, it was divided into small parts and made into farms.