From Brian: "Had our Jim Ferguson been asked you would have got sensible answers (should he still be with us). Started his own helicopter business circa 1965 and in his capacity as a reserve RAN type came to Vietnam for a bit of Huey troop lift stick time during his holidays/reserve time."
That's the bloke I recall. I flew with him as a kid in the 'yellow peril' (his banana yellow 206) in PNG in 1976 IIRC. You could not say that bloke didn't have aviation experience. Sea Furies off the Sydney and plenty of rotary wing experience. If he's still around, thanks Jim.