Everyone seems to be in agreement that Roy Truly can be seen near the foot of the steps of the TSBD in the Couch film. Baker can be seen to run by him, attracting his attention, and the two of them supposedly went on together from this point to the famous 2nd floor encounter with Oswald.
The question is, what is Truly doing at the foot of the steps? According to his WC testimony, he and his boss, Ochus Campbell, had been on their way to lunch, and had stopped to watch the motorcade with a group