604 Sqn RBCAF

604 Squadron RBCAF is an surface-to-air missile unit of the Royal British Columbia Air Force based at RBCAF Boundary Bay, south of Vancouver, British Columbia.

Equipment

 * 1962–1969: Bristol Bloodhound Mk. I
 * 1969–1976: Bristol Bloodhound Mk. II
 * 1976–2008: Fairey BC Skookum Kamooks
 * 2008 to date: Almaz S-300PMU-2

Since 2003, 604 Sqn uses the Ukrainian Kolchuga ESM ("passive radar") system in addition to other radars and sensors.