I came back to France - into the waiting arms of the French Air Force. It was a very complicated story. They suddenly realised that my military status was totally obscure. Some papers said I was active army because I was at the École Polytechnique; some papers said I didn't show up when I was called, so I was the lowest level of deserter. Well, I was drafted. It's a long interesting story as adventures go, but had no, or very little relevance to my life as a scientist, except perhaps for the following reason. Again I would like to emphasise, I spent a year in a certain way doing nothing. In another way, this was one of those extraordinarily important years when decisions were taken, where things fell somewhat into place. It was at the end of that year that I applied to the ONERA, the aeronautical research laboratory, which was a natural thing to do given my degree, with a year of finishing my Ph.D. with somebody who'd be closer to actual fluid mechanics and continuing. Well, that decision was natural but this year of thinking had made me dubious about whether I should do it, because, again, I had left Caltech because I couldn't find a nice Ph.D. topic, and because it was too much to hope that I would find a better one in Paris, where there were fewer people and many of the people were quite young and inexperienced.