Theconservativetreehouse.com has a video showing the SS sniper targeting the shooter BEFORE the shooter attempts to kill Trump. Then, after the SS lets the shooter take his shots, then and only then does the SS sniper take him out.
This looks like a setup with the SS being in on it. Only taking the shooter out after he had killed Trump.
I must reluctantly assess that as a highly probable theory.
The video of the SS counter-snipers simply looks like they had clear sights on the area and waited for the assassin to fire at least three rounds before they took him out. The major flinch of one of the SS counter-snipers on the left is inexplicable. Did they believe they were taking direct fire?
And why was that building not occupied by Secret Service in the first place? It was 130 yards from the podium and in direct line-of-sight. Was the SS detail short-staffed?
Where did the assassin have his weapon stashed? How did he know that his selected location would be unsecured? What is his real name? And who are his recent contacts?
The multiple witnesses who saw the assassin climbing up to the roof tried for at least three minutes to get local police and Secret Service to pay attention. The response was "confused" at best. That is the final tell that something was very wrong with this SS detail.
MarQ