Sorry, but the claim that bullet fragments from the head shot caused the dent in the chrome and the windshield damage, and that therefore another headshot fragment could have cleared the roll bar and the windshield to streak toward Tague, just doesn't work.
Dr. Tom Canning, the trajectory expert for the House Select Committee on Assassinations, told the committee that the windshield damage appeared to be too high to have been caused by a fragment from the headshot missile. So there's no way that a headshot fragment could have cleared the windshield to fly toward Tague.
If you accept the autopsy x-rays and photos and the Zapruder film as pristine and authentic, where in the world do you see an exit point in the skull that would even come close to allowing a fragment to fly at the necessary horizontal angle from the skull to fly toward Tague? Where? Where is it? And how can anyone posit such a theory given the position of JFK's head in the milliseconds during and just after the headshot? How?
And, for Pete's sake, if your headshot bullet came from the sixth-floor window, it entered the skull at a downward angle of about 20 degrees. So how would a fragment from that bullet exit the skull at an upward angle and with enough velocity to reach Tague with sufficient force to cut Tague or chip the curb? Again, as Dr. Canning noted, the windshield damage was too high to have been caused by a headshot fragment, and that damage was below the windshield chrome.
Three other points:
* Tague could not have been wounded by a fragment from the headshot because he had already ducked under the triple underpass before the headshot occurred. Dr. Thomas notes that photos taken in Dealey Plaza during the shooting confirm Tague's recollection that he took refuge under the triple underpass. Tague also recalled that he heard a shot after he got under the underpass. As Dr. Thomas notes, "Quite obviously, if he heard a shot after he ducked under the bridge, then he could not have been wounded by the last shot" (Hear No Evil, p. 378).
* As part of the research for his book Reasonable Doubt, Rockefeller Foundation scholar Henry Hurt contracted an engineering firm to study the curb mark, and the firm confirmed Harold Weisberg's earlier finding that the mark had been patched (Reasonable Doubt, pp. 136-138). (Weisberg had determined this by getting access to the high-quality color photographs that the FBI's Shaneyfelt took of the curb section in May 1964, and then by gaining access to the curb section itself.)
* The FBI destroyed the small spectrographic plate that contained a scraping from the curb mark in the face of repeated FOIA attempts by Harold Weisberg to have the plate tested by independent experts. The plate was subjected to spectrographic testing by FBI crime lab chemist John Gallagher in 1964, but the FBI withheld the lab report from the WC. Instead, Hoover sent a letter to the commission that--supposedly--summarized the lab findings.
Hoover said the smearing contained lead with a trace of antimony, which at the very least suggested the curb was struck by a bullet fragment. Weisberg sued to get a copy of the FBI lab report. When Weisberg finally received a copy of the lab report, he noticed it was suspiciously incomplete. So Weisberg then sued to be allowed to have the spectrographic plate analyzed by independent experts. After several Weisberg FOIA suits, the FBI announced that in "routine house-keeping" it had destroyed the plate.
Look, it's so simple: The obvious conclusion is that a fourth shot was responsible for Tague's wounding.