>> this guy was killed by the actual sniper.
Interesting theory that forensics can dis/prove.
The rounds can be connected to the gun, and the gun to the shooter. Situation requires “actual sniper” to be in same room, and yet escape (or somehow mingle with the SWAT team.)
Silenced pistol of same caliber of police kills guy.
Ceiling vent already for him to go up into, panel pulled back up behind him.
Guy is wearing swat type or LVPD uniform clothing to climb out somewhere inconspicuous, and leave through the crowds.
Not impossible for someone well trained, but what are the motives?