I had a go at a chap from Waddington about the name "Air Seeker". His response was that "Air Seeker" is the name for the whole system including aircraft, ground platforms etc, while the aircraft will retain the name "Rivet Joint" much in the same way as "ASTOR" and "Sentinel". I do not know enough about Air Seeker to know if this is the case, but....... that is what I was told.