Personally my answering of questions after a shoot would be held only to those things immediately visible absent of opinion with the addition of "I was in fear for my life and acted to stop the threat." After that it is lawyer time.
Any half competent Prosecutor will enter that statement into evidence and argue that it's "rehearsed" . . . That it appears repeatedly in gun forums and is presented as the "rubric" for establishing "self-defense."
The ONLY statement to make is: "I want an attorney."
Once you say that, questioning stops.
Statements after that should be limited to things like, "The cuffs are kinda tight." And, "You wanna brace me while I get in the back of the cruiser?" "I need to pee."