Mr. SPECTER. What is your best recollection of the speed at which you were traveling as you turned left off of Houston onto Elm? Mr. GREER. My best recollection would be between 12 and 15 miles per hour. Mr. SPECTER. And how far were you at that time behind the police car which was in front of you? Mr. GREER. Probably 50 feet maybe--approximately. I will say approximately 50 feet. Mr. SPECTER. As you turned onto Elm, did you have any opportunity to observe how far behind you the President's follow-up car was? Mr. GREER. No, sir. I was not looking in my mirror; I could not say how far it was behind me at the time. Mr. SPECTER. And what was the nature of the crowd as you made the turn onto Elm Street, if you recall? Mr. GREER. To the best of my memory, the crowd had thinned out a great deal, and there was not too many people in front of that building. Mr. SPECTER. How many lanes of travel were there on Elm Street? Mr. GREER. It was either three or four lanes wide. I have forgotten. Mr. SPECTER. In what portion of the street were you traveling? Mr. GREER. I was right in the center of the street. Mr. SPECTER. Would you describe for us the contour of the street at that point--whether it was level, hilly, or what. Mr. GREER. It was starting to go down--gradually going down toward this underpass. It was a down grade. Mr. SPECTER. Now, would you tell us just what occurred as you were proceeding down Elm Street at that time? Mr. GREER. Well, when we were going down Elm Street, I heard a noise that I thought was a backfire of one of the motorcycle policemen. And I didn't--it did not affect me like anything else. I just thought that it is what it was. We had had so many motorcycles around us. So I heard this noise. And I thought that is what it was. And then I heard it again. And I glanced over my shoulder. And I saw Governor Connally like he was starting to fall. Then I realized there was something wrong. I tramped on the accelerator, and at the same time Mr. Kellerman said to me, "Get out of here fast." And I cannot remember even the other shots or noises that was. I cannot quite remember any more. I did not see anything happen behind me any more, because I was occupied with getting away. Mr. SPECTER. Now, how many shots, or how many noises have you just described that you heard? Mr. GREER. I know there was three that I heard--three. But I cannot remember any more than probably three. I know there was three anyway that I heard. Mr. SPECTER. Do you have an independent recollection at this moment of having heard three shots at that time? Mr. GREER. I knew that after I heard the second one, that is when I looked over my shoulder, and I was conscious that there was something wrong, because that is when I saw Governor Connally. And when I turned around again, to the best of my recollection there was another one, right immediately after.