Speculate about UAP technology

Can we have a thread to speculate about the technology behind UAP? There’s been plenty of discussion on T. T. Brown, Ning Li, Amy Eskridge, Salvatore Pias, Bob Lazar, and more. However, I haven’t seen anyone attempt to link these into a single theory. Furthermore, given the recent disappearances, it would be even better to see the work of some these people harmonized with the folks above. If this doesn’t already exist, please have at it. I think society is about to get the tech whether they w...