J. Randall Murphy
Fair enough. I might say that it would be more accurate to question thoroughness rather than legitimacy, and there might be reasons such as costs that limited them to how much service they could provide. Have you ever hired a PI. I have. They're not going to work out every detail unless they're paid. That doesn't make them less legitimate. But basing conclusions on an incomplete investigation wouldn't be entirely responsible either. The question is whether or not it's the investigators or the people who published their findings who are mainly responsible for coming to false conclusions ( if any ).They appear to be licensed private investigators. There is a difference between being a licensed investigator and a legitimate investigator. If you file a MPOETC request to discover the commissioning status of an LEO commissioned prior to 1974 then I would suggest your legitimacy is open to question.
What got you motivated to explore this issue?