Final protective positions do not call for non-lethals. Ever.
The lack of a forceful command concerns me, it is part of training; but if he thinks he doesn’t have time.....it becomes subjective. He is only thinking about protecting his principals.
Why only one shooter? Each person has a reaction time. There was incompetence, but not the shooter.
I wrote “Why was no tear gas or other non lethal response deployed before the mob approached the perimeter where lethal force would be used” Note the word BEFORE. You’re making it sound like these were Zulus swarming over the perimeter at Roarke’s Drift and the cop had no choice but to mow down the surging horde.
Yet the other cops didn’t fire. I don’t buy “reaction time” as an excuse. Didn’t the shooter retreat into an elevator after firing? That doesn’t fit the last stand of the Capitol police scenario. I just can’t see this as situation as you describe it.