At 0:54 in the youtube footage linked below i can see that Hickey (in the rear seat of Queen Mary) could have fired an accidental non-controlled burst of three AR15 shots if his AR15 was in burst mode (instead of manual mode). Three shots if at 400 rpm or 6.7 rps would take 0.3 sec. Far off it would sound like one shot.
Or if the AR15 was in auto mode then Hickey could have fired 2 or 3 or 4 shots, the AR15 would fire until Hickey released the trigger or ran out of ammo.
There are lots of possibilities.
(1) One made a crater in the vertical corner of a concrete pier of the underpass behind Tague.
(2) One ricocheted off the concrete curb near Tague.
(3) One ricocheted off the tarmac of Main Street near Tague.
(4) One ricocheted off Main Street then off the curb near Tague.
(5) One ricocheted off the tarmac in Elm Street.
(6) One hit a concrete storm sewer entry on the southern curb of Elm St.
(7) One hit the chrome trim on the top of the windshield.
(8 ) One cracked the windshield left of the rear vizion mirror.
(9) One hit JFK in the head (imagine JFK's head is 4'1"above that there cross painted in the center lane).
A quick automatic burst of shots would trace out a nice line or smooth arc. If any of the above are too far to one side then that might disqualify them. (1)(2)(3)(4)(5)(7)(9) are ok, but (6) the sewer entry is too far left of the others, it is a lane width (13 ft) to the left of the Hickey-to-Tague line (the sewer is difficult to see at 0:54 but easy to see later in the footage). And (8 ) the cracked windshield is too far left of the others.
In any case Hickey would have had some amount of horizontal swinging movement in his errant AR15, as well as some vertical movement. I suppose that there is no limit to the possible spread of a burst if the AR15 is swinging wildly enuff. As long as the arc traced out by the shots doesnt need an impossible zig or zag, which i think it doesnt (except for the sewer & the crack).
The JFK fatal headshot would have been the first shot of the burst if Hickey were falling backwards (if the QM suddenly accelerated), or the last shot of the burst if falling forwards (if the QM suddenly braked).
If the AR15 fired at 400 rpm in burst or auto mode then that is 6.7 rps, modern AR15s can i think fire 12 rps. There were witnesses that mentioned bursts. Agent Kellerman in the passenger seat in the limo said there was a flurry of shots at Z313. Many said that the shots at Z313 were almost simultaneous. Yes, i reckon that Hickey did set the AR15 in burst mode (which gives 3 auto shots). Yes, many crazy witnesses were actually sane.
Royce Skelton saw a bullet hit the road (Elm St i think) at time Z313, he didnt say exactly where. That was in addition to the bullet that Skelton saw that hit the road earlier at say Z150, near where Virgie Rackley Baker saw a bullet hit the road, but those two Z150 sightings were due to Oswald's shot-1 which had ricocheted off the signal arm, so they aint important here.
There was a lot of gunsmoke on Elm St, & gunsmoke followed the Queen Mary to the hospital. I mean the smelly kind of gunsmoke (cordite) not the smokey kind (black powder). Yep a burst of 3 shots at street level would explain all of that stink much better than a single shot. Oswald's 2 shots up on the 6th story were too high to stink at street level, especially due to the prevailing wind being in his face on that Friday.
A burst of 3 shots makes sense. Or an auto burst of 2 or 3 or more shots.
Still thinking. Here is the youtube footage, stop at 0:54.
