That's the question I ask in my latest Mysterious Universe article...
And here's the opening paragraphs of the article:
"One of the intriguing threads in the never-ending Roswell affair of July 1947 is that which posits a link between the craft and bodies that came down on the Foster Ranch, Lincoln County, New Mexico and the activities of the Japanese military. In 1997, Popular Mechanics magazine published an article written by columnist Jim Wilson on the Roswell controversy. In part, Wilson revealed that Popular Mechanics had been told of a looming release of files that could possibly shed more light on what happened at Roswell.
"Not only that, Wilson very specifically stated that the magazine had been informed the paperwork in question would document a Japanese equivalent of the post-Second World War Operation Paperclip. As it transpired, such files ultimately did not surface. The story, however, does not end there. Sergeant Melvin E. Brown, who claimed to have seen the Roswell bodies shortly after they were recovered, said they had yellowish skin and an Asian-style appearance."