Kongsberg Defence & Aerospace AS (KDA), one of two operating companies of Kongsberg Gruppen (KOG) of Norway, is a supplier of defence and space related systems and products, mainly anti-ship missiles, military communications, and command and weapons control systems for naval vessels and air-defence applications. Today, the company is probably best known abroad for its development/industrialisation and production of the first passive IR homing anti-ship missile of the western world, the Penguin, starting delivery in the early 1970s (when KDA was part of KOG's predecessor Kongsberg Våpenfabrikk). The latest product which attracts huge interest is the PROTECTOR Remote Weapon Station which is fielded by the US Army (main armament of the Stryker ICV Vehicle), the Canadian Army and the Australian Army. As of 2005, Kongsberg Defence & Aerospace had 1,421 employees.