Unfortunately I never attended IAT at Greenham Common - my only contact with the aerodrome had been in September 1971 during IF training. We requested a GCA, but it was refused on the grounds of 'noise abatement'.....
Presumably the Yanks didn't know what a Chipmunk was...
So we went to RAF Andover instead.
Flatiron, who occasionally peruses PPRuNe, was once the RAF Stn Cdr at Greenham Common - he used to be very courteous towards 'his ladies' as he termed the smellies - and they really didn't know how to take that!
I think that RIAT is really rather on borrowed time. Too much corporate schmoozing and loss of focus towards its heyday attributes. If you're invited to a corporate 'do',
never say you're available on the Friday - that's the 'also rans' day. Only agree to a Saturday or Sunday invite!!