Mmmm.... airborne argument with the Flight Checkers on their way in to Brize.
Them outside their NOTAM sorting themselves out for their check of the PAR/ILS or whatever.
Us telling them to Foxtrot Oscar as they we heading into a NOTAMed live DZ with troops in the air.
I still can't believe how long it took and how difficult was to get it into their heads that we didn't care if they were 'checking' we would 'discuss on the ground' but in the meanwhile there are live bodies below who don't want to be introduced to their props NOW FOXTROT OSCAR!