http://www.airspacemag.com/flight-today/dont-mess-with-switzerland-1833740/ http://www.airspacemag.com/flight-today/dont-mess-with-switz... Aircraft caverns :)

http://www.airspacemag.com/flight-today/dont-mess-with-switzerland-1833740/ http://www.airspacemag.com/flight-today/dont-mess-with-switz... Aircraft caverns :) F18/A Hornets and modern equipments.