It is ironic that Goddard and German rocket scientists experimented at White Sands Missile Range after WWII.
That was what I believe they were covering up. Not aliens. The Nazi rocket scientists that were smuggled across the border. I believe the wreckage was a crashed V-2 from White Sands. It would have caused a huge stink if it was known we let those Nazis into America.
Likely true.
They have alien graffiti (art) on a lot of buildings in downtown Roswell. Otherwise it is a pretty sane town.
Smile.