I understand what you're saying. My oldest brother, who participated in the D-Day Invasion, would never talk about it either.
I watched Kyle's face the entire time. He was screwing it up trying to force the tears. It was a stone cold act, and a plea for sympathy. He certainly had no problem describing the other two shootings, or saying the first guy "ambushed" him . The defiant kid who kept repeating over and over "I did what I had to do to defend myself" is who he is.
This kid is a thug. His eyes are cold and without feeling. His driving without a license is very telling of his respect for the law. His behaviour, demeanor and whole attitude, while typical for a kid his age, is precisely the reason why possession of semi-automatic weapons is illegal. And he was flouting that law as well.
He came across as very well coached, but his even his descriptions of his actions that night - pointing his gun at a gun who was setting a dumpster fire or something similar, and basically threatening protestors with it, shows he was the aggressor at all times.
The protestors were the "good guys" trying to take out the "bad guy with the gun", who should not have been there, and most definitely should not have been armed.