>>40933412 (OP)
I have actual Project Bluebeam insider info, but it is the combination of true and boring that often makes it not worth sharing.
Project Bluebeam, or at least some of the hardware, used to be kept at Fort Devens in Central Massachusetts back in the 1990s. The plan was to use a massive hologram projector on the sky over some Middle Eastern country that the US was planning to invade(I believe Iraq), to show an image of Jesus in the sky. This is where the "Second Coming" idea comes from.
As for UFOs, my source tells me that the light balls might be from Project Bluebeam, but that it sounds like at the time it was impossible to project a solid looking image. Of course there are layers of infosec here and maybe it was possible. The hologram projector was eventually removed when one of the engineers went a little crazy and tried to smuggle it off base. He got disappeared and my source personally got hassled in the fallout from the situation because he was friends with the guy.
Fort Devens doesn't get talked about in conspiracy circles, but there is a bunch of weird stuff, Robert Goddard operated out of it for a time in the early development of rockets, it was one of the first stops for Operation Paperclip, and the place is haunted to shit.
For my source, he was working in Fort Devens at the time and didn't even know it was called Project Bluebeam, there was a lot of weird shit going on at the time and the place had Army R&D so there was always some engineer showing people shit they weren't supposed to in order to show off.