The link, Kluge, is bleedingly obvious. No pilot, in those early, risky and gutsy days of aviation would have lowered himself so far as to be a Gasman, nor would the poor bloody observer. If they were here today, I have no doubt that they would be committed non-gas practitioners who would abhor instant GAS gratification and pyjama cricket. In fact, they may even question (although I can't because it's not PC these days) the orientation of individuals who follow such deviant practices.