Mr. SPECTER. To the best of your ability to recollect and estimate, how much time elapsed from the first noise which you have described as being similar to the backfire of a motor vehicle until you heard the second noise? Mr. GREER. It seems a matter of seconds, I really couldn't say. Three or four seconds. Mr. SPECTER. How much time elapsed, to the best of your ability to estimate and recollect, between the time of the second noise and the time of the third noise? Mr. GREER. The last two seemed to be just simultaneously, one behind the other, but I don't recollect just how much, how many seconds were between the two. I couldn't really say. Mr. SPECTER. Describe as best you can the types of sound of the second report, as distinguished from the first noise which you said was similar to a motorcycle backfire? Mr. GREER. The second one didn't sound any different much than the first one but I kind of got, by turning around, I don't know whether I got a little concussion of it, maybe when it hit something or not, I may have gotten a little concussion that made me think there was something different to it. But so far as the noise is concerned, I haven't got any memory of any difference in them at all. Mr. SPECTER. Describe as best you can the sound of the third noise. Mr. GREER. Just, to me it was similar, to the first two. They all sounded practically the same to me. Mr. SPECTER. You testified that at the second noise you glanced over your shoulder. Mr. GREER. Yes, sir. Mr. SPECTER. Which shoulder did you glance over? Mr. GREER. Right shoulder. Mr. SPECTER. And describe or indicate how far you turned your head to the right at that time? Mr. GREER. Just so that my eyes over, caught the Governor, I could see, I couldn't see the President. I just could see the Governor. I made a quick glance and back again. Mr. SPECTER. Was the movement of your head just then approximately the same? Mr. GREER. Yes, sir. Mr. SPECTER. As the time? Mr. GREER. Yes, sir. Mr. SPECTER. You just indicated the turn of your head slightly to the right. Mr. GREER. My eyes slightly more than my head. My eyes went more than my head around. I had vision real quick of it. Mr. SPECTER. Exactly where was Governor Connally when you first caught him out of the corner of your eye? Mr. GREER. He was--he seemed to be falling a little bit toward Mrs. Connally, to the left. He started to go over a little bit to the left. Mr. SPECTER. And how far did you catch his movement during the time you were able to observe him? Mr. GREER. Just a second. He probably hadn't gotten his shoulder, he hadn't fell down or anything. He probably was in a position such as I am now. Mr. SPECTER. Did he fall to the rear or to the side or how? Mr. GREER. In my opinion, he fell toward Mrs. Connally which would be to his left or to his side. Mr. SPECTER. Did he fall then on his left shoulder and arm or in some other way?