If you have not yet read Nick Redfern’s two books on the Roswell UFO incident, you should.
Body Snatchers in the Desert: The Horrible Truth at the Heart of the Roswell Story
The Roswell UFO Conspiracy: Exposing A Shocking And Sinister Secret
Nick believes the Roswell incident had nothing to do with aliens. He writes: “All of the data I have uncovered points in the direction of top secret, controversial experiments involving high-altitude balloons and human guinea-pigs.” I agree. This was actually the position I took in my novel, released way back in 2001, The Façade. It was one of the sub-plots of the storyline.
Granted, the case Nick marshals is not perfect. But no explanation of Roswell is without problems. However, one can build a strong circumstantial case where human experimentation and human technology make far better sense of the verifiable data points than aliens do.