I was a QFI on a UAS where one day the boss had a call from a former student who wished to visit the airfield. The boss was rather NFI about it until the ex-student said, ‘I bet you’d be more helpful if you knew I was a retired Air Marshal!’
The boss then couldn’t do enough to help & I was tasked to host him. He turned up in his own ac, an Arrow Active. A top bloke, ex-Flt Lt & former TP. He was somewhat scathing of the attitude of the boss though.