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
Ion Theodorescu-Sion composition into solid shapes, for which the model was Cézanne. Co-opted as a teacher at the National School of Fine Arts, Theodorescu-Sion was also one of the founding members of the Artists' Society, a leading Romanian professional association. As Romania entered World War I in 1916, Ion Theodorescu-Sion was forced to interrupt his work on the Constanța murals. Once drafted into the Romanian Land Forces, he returned to official and academic art: he was employed by Chief of Staff Dumitru Iliescu to depict the Romanian Armed Forces in action. Sion witnessed (and painted) the subsequent storming of the Romanian front