Mr. GREER. I usually allow 4 or 5 car lengths, if possible, between the car and myself, in case that there is any reason to speed up quick. I like to leave enough room that I can get out of there. I don't like to get too tight to the lead car when possible--unless the crowds are so big that I have to get in or they would close in on me--I have to get in closer. Mr. SPECTER. Do you know how far behind you the first car immediately behind yours was? Mr. GREER. The car behind me was only some few feet, because with our training and all, we stay very, very close to the President's car. Sometimes we are bumper to bumper. And the car never is much more than 10 to 12 feet away from the President's car, at slow speeds. Mr. SPECTER. Did you endeavor to maintain a constant speed in the operation of the President's car so as to avoid contact with this close gap between the President's car and the President's follow-up automobile? Mr. GREER. Yes, sir. We tried to drive at a very steady speed. We are used to driving with each other, and we almost can tell each other's thoughts what we do, because of the training we have had, and we work so long together. We drive at a steady pace of speed, so that we give each other enough ample time to stop or move in close. Mr. SPECTER. After turning off Main onto Houston, did you have any opportunity to take a look at the building which you have since identified as the Texas School Book Depository Building? Mr. GREER. No, sir. I had not any chance to look much at that building at all. When I made the turn into Elm Street, I was watching the overpass expressway--the overpass, or what was ahead of me. I always look at any--where I go underneath anything, I always watch above, so if there is anyone up there that I can move so that I won't go over the top of anyone, if they are unidentified to me, unless it is a policeman or something like that. We try to avoid going under them. Mr. SPECTER. Now, when you turned off of Houston onto Elm, did you make a right-hand or a left-hand turn? Mr. GREER. I made a right-hand turn off of Main onto Houston. Mr. SPECTER. And when you turned from Houston onto Elm, was that a right-hand or a left-hand turn? Mr. GREER. That was a left-hand turn. Mr. SPECTER. And as you turned onto Elm Street, how far, to the best of your ability to estimate, was your automobile from the overpass which you have just described? Mr. GREER. I wouldn't have a distance recollection at all on how far it was. It wasn't too far. I just could not give you the distance. Mr. SPECTER. At that time, did you make a conscious effort to observe what was present, if anything, on that overpass? Mr. GREER. Yes, sir. I was making sure that I could not see anyone that might be standing there, and I didn't see anything that I was afraid of on the overpass. Mr. SPECTER. Did you see anything at all on the overpass? Mr. GREER. Not that I can now remember.