The President's automobile was almost past this building and I was looking at the overpass that we were about to pass under in case someone was on top of it, when I heard what I thought was the backfire of a motorcycle behind the President's automobile. After the second shot, I glanced over my right shoulder and saw governor Connally start to fall, I knew then that something was wrong and I immediately pushed the accelerator to the floor and Mr. Kellerman said get out of here.

Greer estimates that he had crossed the center line of the building when he heard a noise which sounded like a motorcycle backfire. On hearing this noise he glanced to this right toward Kellerman and out of the corner of his eye noticed that the Governor appeared to be falling toward his wife. He thereafter recalls hearing some type of outcry after which Kellerman said, "Let’s get out of here."

[Greer was not asked where he thought the shots came from.]