My father was born in Artesia NM and moved down the road to Roswell soon after.
Not a big place at the time.
He was there. He knew many of the people involved.
He worked at White Sands missile range while in college.
he worked at Morton Thyocol, Hercules, Reinhold, all sorts of aerospace and missile type-places. he worked with JPL and NASA. He worked on lots of projects that required substantial security clearances.
One time I asked him directly about the Roswell conspiracy.
He said "It was all a bunch of whooey. Lots of people getting caught up in the BS, looking for their 15 minutes of fame".
I believe him and trust him more than anyone else on the planet.
Look up project mogul.
https://en.wikipedia.org/wiki/Project_Mogul