 The UK and France procured their E-3 aircraft through a joint project.However, while France operate their E-3F aircraft independently of NATO, UK E-3Ds formed the E-3D Component of the NATO Airborne Early Warning and Control Force (NAEWCF), receiving much of their tasking directly from NATO.However, RAF E-3Ds remain UK manned and capable of independent, national tasking outside of NATO command lines.