I'll be breaking up my reply by witness to your lengthy post, pointing out your logical fallacies, quotes out of context, and unsupported conclusions.
Starting with Kellerman:
You need to read your own citation. Kellerman never said that he "surmised a flurry based on the number of wounds the two limo passengers suffered."
He was arguing that there was MORE than three shots.
But, Mr. Specter, if President Kennedy had from all reports four wounds, Governor Connally three, there have got to be more than three shots, gentlemen.
Asked and answered. Yes, he was arguing for more than three shots, based on what he learned afterward about the wounds suffered by both victims in the limo. Ergo, Kellerman *surmised* a flurry based on the number of wounds the two limo passengers suffered. He did not argue for more than three shots based on his own independent recollection of the assassination, but on what he learned later. We're not interested in his suppositions, or surmises, or conclusions. As an eyewitness, we're interested in his recollections of the event, not his later conclusions about the event. You're quoting his conclusion, which matters not at all. He recalls three sounds, and only three sounds.
Here's what he said in his first report (Dated 11/22/63):
http://jfkassassination.net/russ/testimony/sa-kelle.htm
"... We were still traveling at the normal rate of speed of from 12 to 15 miles per hour when I heard a noise, similar to a firecracker, exploding in the area to the rear of the car, about 12:30 p.m.
Immediately I heard what I firmly believe was the President's voice, "My God, I'm hit!" I turned around to find out what happened when two additional shots rang out..."
He said he heard three sounds, a firecracker sound, and two additional shots. At most, three shots in total. Not your inventive four, or five, or six or more.
Here's his Warren Commission testimony:
== QUOTE ==
Mr. SPECTER. Now, in your prior testimony you described a flurry of shells into the car. How many shots did you hear after the first noise which you described as sounding like a firecracker?
Mr. KELLERMAN. Mr. Specter, these shells came in all together.
Mr. SPECTER. Are you able to say how many you heard?
Mr. KELLERMAN. I am going to say two, and it was like a double bang--bang, bang.
...
Representative FORD. You don't recall precisely a second shot and a third shot such as you did in the case of the first?
Mr. KELLERMAN. Let me give you an illustration, sir, before I can give you an answer. You have heard the sound barrier, of a plane breaking the sound barrier, bang, bang? That is it.
Representative FORD. This is for the second and the third, or the flurry as you described it?
Mr. KELLERMAN. That is right; that is right, sir.
...
Mr. KELLERMAN. I am going to say that I have, from the firecracker report and the two other shots that I know, those were three shots. But, Mr. Specter, if President Kennedy had from all reports four wounds, Governor Connally three, there have got to be more than three shots, gentlemen.
Senator COOPER. What is that answer? What did he say?
Mr. SPECTER. Will you repeat that, Mr. Kellerman?
Mr. KELLERMAN. President Kennedy had four wounds, two in the head and shoulder and the neck. Governor Connally, from our reports, had three. There have got to be more than three shots.
Representative FORD. Is that why you have described--
Mr. KELLERMAN. The flurry.
Representative FORD. The noise as a flurry?
Mr. KELLERMAN. That is right, sir.
== UNQUOTE ==
So Kellerman is clear in his testimony - he hears three sounds in total, the last two of which are, in his words, "instantaneous" (okay, that's only one word). As I've noted in the past, that agrees with Clint Hill's description of two shots and an impact of a bullet on something hard, like a skull.
Here's Hill's first report (Dated 11/22/63):
http://jfkassassination.net/russ/testimony/sa-hill.htm
"On the left hand side was a grass area with a few people scattered along it observing the motorcade passing, and I was visually scanning these people when I heard a noise similar to a firecracker. The sound came from my right rear and I immediately moved my head in that direction. In so doing, my eyes had to cross the Presidential automobile and I saw the President hunch forward and then slump to his left. I jumped from the Follow-up car and ran toward the Presidential automobile. I heard a second firecracker type noise but it had a different sound-- like the sound of shooting a revolver into something hard. I saw the President slump more toward his left."
Only two shots, and the sound of something else, like shooting a revolver into something hard.
And here's his testimony:
http://jfkassassination.net/russ/testimony/hill_c.htm
== QUOTE ==
Mr. HILL. It was right, but I cannot say for sure that it was rear, because when I mounted the car it was--it had a different sound, first of all, than the first sound that I heard. The second one had almost a double sound--as though you were standing against something metal and firing into it, and you hear both the sound of a gun going off and the sound of the cartridge hitting the metal place, which could have been caused probably by the hard surface of the head. But I am not sure that that is what caused it.
Mr. SPECTER. Are you describing this double sound with respect to what you heard on the occasion of the second shot?
Mr. HILL. The second shot that I heard; yes, sir.
== UNQUOTE ==
Two shots, and the sound of something else, like shooting a revolver into something hard. The last two sounds were on top of each other, like a double-sound. Like hearing the gunshot and the impact on the President's skull.
Fully consistent with Kellerman's testimony, and it invokes no extra shooters who mysteriously pop up, shoot, and disappear.
And why did you leave this little tidbit out?
Mr. KELLERMAN. I am going to say two, and it was like a double bang--bang, bang.
Mr. SPECTER. You mean now two shots in addition to the first noise?
Mr. KELLERMAN. Yes, sir; yes, sir; at least.
Referenced and explained to you previously three different times in the recent past.
http://www.internationalskeptics.com/forums/showthread.php?postid=10752298#post10752298
http://www.internationalskeptics.com/forums/showthread.php?postid=10744334#post10744334
http://www.internationalskeptics.com/forums/showthread.php?postid=10743597#post10743597
But thanks for bringing it up again. It explains that Kellerman heard two sounds on top of each other, consistent with many other witnesses. Which is entirely consistent with what his fellow Secret Service agent, Clint Hill, said.
Hank