Although interesting ABC's interview with Annie Jacobson's "source" regarding the alleged events at Roswell in 1947 highlight the consistent problem of individual testimonies. Whilst ABC have declared there were " Holes" in the source's account. His story however essentially remains the same, leaving us really none the wiser.
There are certainly problems with the feasibility of the plot and how the Soviet deception would have been implemented. In addition why would Stalin turn to Joseph Mengele? When he could have taken a leaf out of Nick Redfern's book " Body Snatchers in the Desert" since the USSR had previously captured important Unit 231 sites in China and Manchuria. It held key Unit 731 scientists (later tried, imprisoned and executed).
With possession of key Unit 731 weapons and human trial data; dare I say they might have acquired... possible test subjects? It certainly would have been an ambitious and imaginative project not withstanding the ethics involved.
Nevertheless not to add much more to the current furore surrounding this subject, I found Annie Jacobson assertion that it was not really for her to verify or test the veracity of this claim but merely only to report it quite remarkable.
Has a responsible Journalist I think Jacobson should have withheld this aspect of her publication until further research could be undertaken to either corroborate her source's story or give it at least more credence with additional data since this issue only occupies a small portion of the actual book itself and as such serves little purpose as part of an alleged factual history of such a highly secretive military installation.
Once again without knowing the background of this individual whose sole testimony cannot be verified or cross referenced however impressive his credentials maybe. I have to assume he would have to have been a military doctor or surgeon since Jacobson states in her interview that he (the source) actually claims he held one of the occupants why would a team of engineers be solely charged with both the analysis of biological beings and their craft?
Given that by the time both the alleged vehicle and its occupants arrived at Area 51 they would or at least I would have thought been subjected to the attention of two very different professions regardless of their origin?
Like the Penkridge Mystery so much more is greatly needed to establish whether there is any merit to this story.