I just don't know. What I do know is the internet is full to overflowing with opinions from very comfortable people all who think they have it all figured out. Passing judgment on a situation that apparently took less that 2 seconds to transpire.
I will only say this, and this is my feeling/opinion. I live in one of the most permissive States in the Union when it comes to firearms for defense, and I would not have taken that shot. Fact is, I have been trained to not take that shot.
Granted; I am civilian and he was LEO.
All I have.