Hot 'n' High sadly this wasn't confined to Valley. The general service knowledge of a great many in the RAF was lacking when it came to NCO Aircrew. On another occasion I was crewman on a Shawbury Wessex doing crash/incident standby at Scampton for one of the 'Reds' anniversary's. And again at lunch one of the Team asked us to leave as it was for aircrew only. The FJ world in particular were guilty of this and it came as a shock to some in the 90's when redundant FJ Navs were posted to rotary and they had to work with them! I can only hope that things have improved since then but I doubt it somehow.