Since 1956, the Air Force has been practicing on the Vliehors, the large beach plain on the west side of Vlieland. They train with bombs, rockets and guns from airplanes on an average of 180 days per year. There is no training in the weekends. Furthermore, explosives are not allowed in the period from Mach 1 till September 15.
The shooting range for the Air Force located on the western tip of Vlieland. The airplanes fly in from the North Sea and from the Afsluitdijk (IJsselmeer Causeway) over the Wadden Sea.
The jets produce a tremendous amount of noise disturbance, including the residents of De Cocksdorp on Texel. Therefore since 1995, the number of practices using heavy bombs has been limited. Another problem is pollution. Eight hundred cubic meters of ground around the targets on the Vliehors were found to be seriously contaminated with heavy metals and chlorinated hydrocarbons. The groundwater contained cadmium and arsenic.
Up till April 2004, the Cavalry training center (CSK) from the Army was also located on Vlieland. They used the Vliehors to practice with tanks.