Well, if everyone thought he was a Secret Service agent, it means that nobody thought he was Jack Ruby.
Liars on McAdams forum keep saying that there were reporters who recognized the shooter as Jack Ruby. But none did. Not even Hugh Aynesworth who knew Jack Ruby well.
Only cops claimed to recognize the shooter as Jack Ruby, for instance, James Leavelle. But, Leavelle is a known liar. He lied about his own actions, forgetting about the fact that we could confirm them by watching the tapes. He is bold-faced liar. He claimed to "see" Ruby when he wasn't even looking in the shooter's direction, when he was looking the other way.
And now we know that there was a detective who claimed to "recognize" Ruby from watching the blurry NBC live footage in which you never see the shooter's face, and he appears to be shorter than Jack Ruby, and he displays not one feature that can be associated with Jack Ruby, and yet, he, Detective Boyd, claimed to recognize "ol' Jack Ruby".
He did NOT recognize Jack Ruby because he could not have. So, we have yet another liar among the Dallas detectives.