RAF Fylingdales is Site III, of the Ballistic Missile Early Warning System. The unit is a vital portion of BMEWS operations, which include the 12th Space Warning Squadron, Thule Air Base, Greenland, 13th Space Warning Squadron, and Clear Air Force Station, Alaska. RAF Fylingdales, United Kingdom, operates and maintains the Ballistic Missile Early Warning System. This crew is responsible for missile warning and attack assessment against the United Kingdom and areas of Western Europe and North America. They also provide space surveillance and support the satellite warning service for the UK.