This is BS pure and simple. We captured very few POWs as the Japanese normally fought to the death. My father was on New Caledonia, Saipan and in the battle for Okinawa, and hardly ever saw a prisoner. He told me some Kamikaze pilots did land on Okinawa and screamed to be let out of the plane before it exploded (they were welded into the cockpit).
This sounds more plausible than some of the other stories I’ve heard. It doesn’t seem to follow Occam’s Razor that a civilization would have the incredible technology to cross hundreds or thousands of light years’ worth of distance only to crash in our mundane back yard.
It was a deception. This is known to anyone who isn’t slanted towards “conspiracy theories”.
It was Project Mogul, a project to develop high altitude spy balloons that would spy on the USSR, and this is what crashed in Roswell in 1947.
To say otherwise, is to say that one needs more meds.