Hi Colin,
what is your position on Williams' involvement in the assassination (if any)?
I find it very difficult to imagine that he is not directly involved even if he does not understand the full extent of what he's actually involved in. I strongly suspect he got Norman and Jarman to cover for him, it was just an unlucky last minute decision to go up to the 5th floor.
I also believe Doughrty is 'the man with the rifle'.
Dan my position is that the assembled evidence shows that the WC narrative of events immediately preceding the shooting are not supported. The lunch remnants were in the SN upon discovery and moved shortly after, prior to processing by Studebaker. The unfinished piece is suggestive that the person eating it was disturbed and did not return. Rowland's testimony indicates that and African American person was occupying the SN for a period for some minutes after 12.15, the time he observed a man with a rifle at the SW corner of the 6th floor.
Williams various statements prior to testifying "evolved" over time to the point that allowed Ball and Belin to place him 20 feet or so from their alleged assassin, oblivious to him cowering in the SN. Prior to their WC testimonies, Jarman and Norman provided statements that claimed he ascended with them on the elevator to the 5th floor. I believe that if Williams was the person Rowland observed that this "alibi" was concocted prior to Williams escort to City Hall for questioning. There was about an hour or so that this could have occurred.
I believe that the most likely scenario is one where someone (or something) convinced Williams to vacate his position. I don’t believe this to be of an overtly threatening nature but something perceived by Williams to be benign and reasonable at the time. I do not believe that this event involved Oswald.
If the man was not Williams, someone had to convince him to change his story and admit he was on the sixth floor at that time when he was not. I do not discount this as a possibility entirely but consider it less likely as it would also require Jarman and Norman to be convinced prior to their testimonies.
As for Dougherty, his actions were questioned by WC council very early on (the Eisenberg memo from memory). However, on balance I find it hard to consider him to be the shooter. His role in the west elevator movements just prior to and after the shooting are critical for the WC narrative.