Just after WW11 the authorities were worried about what the Russians were up to.... Anything 'apparently' strange going on (unexplainable things in the sky etc) at around the time of the Roswell incident would be construed as Russian, not alien.
An 'alien' connection, regarding this most famous, well known incident (as it is today) was put forward many years after!
40+ years of reading about / studying the Roswell incident; my conclusion is:
a large balloon with state of the art atmospheric testing equipment, destined to fly high over Russian air space came down.
Not good seeing the local community had a major petition going on at the time, to stop test flights due to obvious fear of something crashing into a populated area. Funny how this is never mentioned in books etc by those who are trying to brain-wash the gullible to buy more merchandise!! Much like how it's never mentioned in any book etc about the loch ness monster that loch ness is a migration rout for basking sharks!
Kenneth Arnold's report was a few months before Roswell. This is the important bit IMO::: taking into consideration that (at the time) the authorities & the public were thinking Russians---NOT aliens:
the initial report of a 'flying saucer crash' was a quick, think fast attempt at covering up the downing of a test flight that the authorities promised would never happen! Simple...
To watch discussions/ documentaries/ TV shows etc regarding this incident does make me laugh! Like I've always said: a place like this is interesting-- not so much for insight into this enigma, more of an insight into 'people' & how they perceive what they are told; & the complete & utter CRAP some take in because it suits them!! Fascinating