Because I claim that Trump's ear and James Copenhaver's arm were shot by the same, first, supersonic bullet, it's geometrically impossible for that shot to have been fired by Crooks, who was 20 meters east of the trajectory.
The same applies to the 2nd shot, in a line from David Dutch to the JCB Telehandler crane.
And the 3rd shot, obviously inches from the podium microphone, before hitting Copenhaver's stomach, also could not have been fired by Crooks.
Someone, not me, could argue that Crooks fired some of the suppressed shots, but Crooks' gun didn't have a suppressor.
Someone, not me, could argue that Crooks fired the 5 fast shots, but no gunsmoke ever was visible near Crooks.
If you think the 5 high speed shots were by Crooks, only 5 bullet shell casings should have been on the AGR6 roof.
But 8 shell casings were found, and I claim that all 8 were planted.

Michael Sulerud offers black bag to Matthew Shaffer, who doesn't want it.
Sulerud seems to stare into the black bag at the end of this clip.

Sulerud puts the black bag on the roof ridge.

Black bag is on the roof ridge 45 seconds later. Detective Collins has moved West.

Matthew Shaffer seems reluctant, but accepts the black bag.
Sulerud makes sure its contents are securely inside.

At the 1 minute 45 second mark, Michael Sulerud tries to give a black bag to Shaffer, but Shaffer rejects it, so Sulerud places the bag on the roof ridge. At the 3:50 mark, Sulerud takes the bag from the ridge, and gives it to Shaffer, who seems to be irritated in accepting the bag.

Rich Gianvito counts shell casings on AGR6's north slope:

8 shells from Gianvito's bodycam at 18:31:48

8 shells from Gianvito's bodycam at 18:58:54

So, who planted the 8 brass shell casings?
THOMAS MATTHEW CROOKS PLANTED THE 8 BRASS SHELL CASINGS, BEFORE ANY SUPERSONIC SHOTS WERE FIRED!
Trump's shooting was STAGED, not by Trump, but by the enemy gunmen!
So, Crooks knew that 3 shots would be fired by the bald man, who would escape, off the roof, whether he hit, or missed, Trump.
Then, 5 high speed shots would be fired by the brown-haired man, who drove the white van, with Arizona license plates, and who knew that he would be shot dead, if not by the police, then by one of his own enemy teammates.
So Crooks, in advance of the supersonic shots, and without firing any shots himself, PLANTED THE 8 BRASS SHELL CASINGS, WHERE THEY WERE FOUND!
You or I could disagree with where Crooks decided to place the 3 casings, on the roof's south slope, but that's where Crooks decided to put them.
Or, you decide who planted the 8 brass shell casings, counted and shown on this page.

An AR15 rifle typically ejects it's empty shell casings in a 30° arc to the gun's right side.

The man 1st onto the roof in black uniform, wearing 'aviator' sunglasses apparently was interviewed by the US House of Representatives Task Force, but his interview isn't available, in the list of 45 transcribed interviews, as I learned from JD Wilcox'x "Who Shot Trump?" video, linked above
That man's name isn't even redacted(blacked out) like the names of the other 45 witnesses.
Ironically or not, Chris Kopas, in his interview on page 139, line 8, suggests the unknown man's name as 'Shaffer', a Washington County, Pennsylvania SWAT officer.
In the video clips above, 'Shaffer' is above 'SWAT', all in white letters.
So after redacting the names of all the other witnesses, someone apparently forgot to redact the name 'Shaffer' from Kopas' interview answer, naming the man whose interview seems to have disappeared!

2nd onto the roof was Michael Sulerud
then Chris Kopas
then Detective Tyler Collins
then Rich Gianvito(no interview)
then Michel Nicol(no interview)

JD Wilcox discovered that Matthew Shaffer's interview is missing