It’s not fight or flight. It’s fight, flight or freeze. Of the three, the freeze response is the most likely. I’ve seen countless videos in which an attacker brings a gun to bear on innocent civilians and nobody does anything. They stand like statutes. Or, more precisely, they freeze like a deer in the headlights.
It’s the “can’t get to the end of the OODA loop” problem. I’ve experienced it myself. And, hopefully, trained myself out of it — by always moving when I draw and taking force-on-force training which “inoculates” you to paralytic stress.
How about you? Have you ever frozen in the face of danger? Will you, can you react quickly and decisively when attacked?