Creative Speculation

a) you made two self-contradictory arguments that 1) witnesses can be wrong about where sounds come from and 2) most people heard shots from the TSBD area.
b) I thought you were joking or being sarcastic by inferring the people may have been running up the knoll to retrieve their parked cars. I would think better of you if you were joking.
c) since the autopsy was handled so horrendously, no one really knows where bullets struck JFK. The backwards movement is obvious and visceral. No one sees that and thinks "oh he was obviously hit from behind" or "oh that is obviously the result of the jet effect which is happening this one time only in the history of the world". No, people see a body reacting to a shot striking from the front. That's why Life Magazine and the Warren Commission both felt they needed to reverse the frames when printing the sequence.

By the way, I forgot to add d) to my three issues at 3PM Dallas time day of the assassination.

d)Dr Perry at Parkland Hospital said during a press conference that the president had suffered a wound of entrance in his throat

As to the investigations:
A couple of Dallas police officers went up to the picket fence area after the shots, and more police officers combed through the railway yard and parking lot, but once the shell casings were discovered shortly after 1 PM the Dallas police did nothing but focus on the TSBD as the sole source of shots.

The FBI was told to look into all leads... for twenty-four hours. At that point Hoover wrote a memo declaring Oswald the sole assassin and field agents were instructed to stop any investigation not involving Oswald. In that 24 hours the FBI did very little, if anything, related to shots from the knoll area.

The Warren Commission started from the premise that Oswald was the sole shooter and did everything in its power to downplay, suppress, and disappear any contradicting information.

The HSCA developed a lot of information pointing to a high level conspiracy and classified most of it, on its way to a weak conclusion that there was "probably" two shooters but the second guy missed and Oswald did it.

I pointed out four solid leads or reasons pointing to a shot from the knoll existing at 3PM Dallas time - including eyewitness, photographic,and expert - and they were all ignored and you don't seem to think anything is wrong with that picture.