Forgot to quote DFS post on survey/market research. The case could have used this approach back in 1971. I've spent some time in market research and can appreciate your thinking, both from design of surveys, to actually asking the right questions. The 302s are pretty detailed, and a good summary, but after being on this forum for a few years, I realize that so many more questions would have been better. I still believe the FBI did what they could at the time and that they had no idea that so many little details would be important 50 years later. One question I'd ask of some of the investigators is "What do you wish you had asked the crew or passengers that you did not ask in 1971?"