i learned from gene krantz and from the early flight directors. i wanted to make sure that we didn't lose those lessons, but nasa changed. the problem with the shuttle program was nasa was a research organization. it was not designed to be an operational organization. it was not designed to run an airlines. and we were always caught in this dichotomy of we want to keep flying the shuttle and there were attempts to turn it over to contractors, but it's like kind of like hiring a contractor to fight your war for you if you're a nation. some things should be under the direct control of those with profits in mind. and serve the will of the people and serve the constitution, so to speak. and so, once we started flying lots and lots of missions and the early programs, there was assessment. we're going to fly 50 missions a year or a week and you could never do it with four shuttles and couldn't do it with the staffing we had, it was impossible, but we did fly 12 in one year and it got really, really busy. so we got into this mode of trying to put-- to sy