Call me crazy, but I still believe it was a SS agent who ACCIDENTALLY fired that explosive head shot with his AR-15 from the chase car.
Was the Secret Service using AR-15's at the time?
I won't call you crazy, but that is a silly notion that is not supported by the evidence and was debunked long ago.
One shot came from behind the wall atop the grassy knoll-—witnesses saw a puff of smoke-—and the shooter dropped down into the manhole, pulled the cover closed, and escaped thru the underground storm drains.
That would explain why motorcycle cop Bobby Hargis ran up there, looked around, and didn’t see anybody. He didn’t look down. There is a manhole cover. right. there.
Another shot **may** have come from an underground shooter firing upward from the storm drain in the curb, to the left and slightly ahead of the motorcade. If so, that shooter also escaped thru underground drainage pipes.
If you stand on the right hand curb and look toward the second green X painted on the street to mark the head shot, the angle is perfect for the two above mentioned shooters.
The magic bullet that wounded both JFK and Connolly, marked by the first green X, came from Oswald’s general direction, but could also have originated from another building.
It’s hard to tell, because the “assassin’s perch” in the Sixth Floor Museum is roped off. Visitors inside are not allowed to get close enough to the window to look out onto the street. But if you’re standing on the street, on either one of the X’s and looking up at the sixth floor window, the angle seems almost impossible.
I went to Dealey Plaza, and that’s my theory. I believe the green X’s may have since been painted over.
Then why did LHO find it necessary to assassinate Officer Tippit?