Joint Force Harrier, initially known as Joint Force 2000 and towards the end of its life as Joint Strike Wing, was the British military formation which controlled the British Aerospace Harrier II and British Aerospace Sea Harrier aircraft of the Royal Air Force and Fleet Air Arm between 2000 and 2011. It was subordinate to RAF Air Command. Upon its disbandment there were two operational Joint Strike Wing squadrons, one Fleet Air Arm and one Royal Air Force, plus an RAF Operational Conversion Unit.