If Lee was working with the Agency as an operative of some kind, and was promised protection after doing work, why would he doubt their ability to protect him? They are international in scope and have the ability to change a person's total identity, issue phony passports for travel to any-where, and likely even grant plastic surgery services. What they can do can make a person in WITSEC look as famous as a Lottery winner on TV.

NickyWhip, what it looks like, at least to me, is that Lee was sent to Dallas under the pretense to kill JFK as a lone shooter. It's pretty much known now that the kill shot did not come from Lee's gun, and Lee knew this, instantly. That's why he told the media after he was arrested that he was the patsy. He knew that the moment he saw JFK hit with the headshot. If the plot as revealed to Lee was for multiple shooters to hit JFK, then Lee would have no reason to suspect or say that he was a patsy once he saw that it wasn't his shot that killed JFK. Lee did not know the plot was for multiple shooters, but it was. He thought he was the only shooter in Dallas.