Why not have Dougherty as the 'man with the rifle' Rowland saw?
That's possible.....But even if Dougherty was the man with the "high powered hunting rifle " (
"a thirty odd six" with a large scope as Rowland described it) I doubt that he fired it. I doubt that there were any shots fired from the TSBD..
Whoever the puppeteer was, who was pulling the strings.... He may have set the simple minded Dougherty up as an accomplice or a back up patsy, in the event that Lee Oswald foiled their plan to frame him.