I have no idea. He went to Fort Knox as an infantryman for unspecified training. Fort Knox is an Armour and Cav Scout post. I haven’t the foggiest notion what he would be doing there and I was unable to find a comprehensive list on google of what kind of training was going on there in the time concerned.
Ok?
Actually, there was some specification, albeit imprecise. That specification was AIT, which as can be found through only a bit of searching, is prerequisite for the further training required to justify the claim in dispute.
Forgive me for repeating myself here, but it is only in response to your own repeating of vague assertions, which have been addressed, both in the previous posts to you on this subject, and again, more briefly in the paragraph above.
That info points toward both impossibility of the claim, and the futility of speculation towards it's support.