35 years ago at SORF RAF Manby we had a "Sqn Cdr" who had been on an Exchange Tour with the USAF. He used to hold Sqn meetings and exhort us to "keep our ducks in a row" and "keep it tight in the air and slack in the Crewroom" etc.
We would then have a Sqn meeting in the Bar to try to work out what he meant. We rarely succeeded - but it was worth the try!!