Slightly off the topic, but is an interesting item--and this is a rumour network-- so, here goes:-
It is alleged that
there was a Sqdn.Ldr. B*********s at Seletar in 1968, who went mildly native and spent all his leave up country, going further north each time. In northern Thailand, he chanced upon a USAF Major based at RTAF Udorn who he had known when both were based at Wattisham and Lakenheath respectively.
Many beers flowed, bravado took hold, and they cooked up a scheme for the RAF man to fly an operational mission (Vietnam, of course). This happened, and (it is said) the guy did at least one mission in the back of an F-4, over Laos.
This story was quite common currency in Singapore at the time, and afterwards, and the RAF man was said to be almost the only serving RAF aircrew who had been chased by a SAM-3 for real.