Bertel O. Steen (BOS) is one of Norway's largest trade and service companies, and has been working with products related to the Armed Forces and the Police since the beginning in 1901. Bertel O. Steen Defence & Security today represents some of the most important international manufacturers of military vehicles, navy vessels, weapon systems and other equipment in Norway. We work closely with leading global defence suppliers within a wide range of products for the Armed Forces and the Police.