The theory of... of Cubby [Albert 'Cubby' Broccoli] and Harry [Saltzman] and... and the directors too, was that we were… we're going out of our way not to cheat the audience. You know, sometimes obviously we had to use trick, but as a rule we did everything for real. And I'll never forget we had a sort of American colonel who was – ex colonel – who was a friend of Cubby who found out that there was a jet pack being used in the American army. So he got it over and Sean is supposed to – I don't know if you remember the film, it was on Thunderball – and Sean takes off his jet pack and it flies for about two minutes or something, but… and then it runs out of fuel, and you know, and if you are 800ft up you'd better get down, you know, quickly, before it runs out of fuel. And of course Sean could… would not do it, and we would have never allowed him to do it, and we had an American stuntman who knew this thing, but you know, there was no gauge you could look at or something. I think you had to go by your timing, and that, you know, two minutes or two and a half minutes, and then that's it, you know, so that was danger as well.