Thanks for improved analysis; I had just assumed that he fired a shot towards someone else as pedo was running up behind, turns around and 4 shots, one to the head.  I figured a grazing bullet might have just been a long entry/exit wound.  With little actual experience with guns, and the limited resolution and light I took for granted that it was all Kyle shooting.    He showed great restraint on his walk to the cops.  Did not shoot until after being knocked to the ground and they were coming up on him.  Also did not shoot to the one who surrendered and turned back, but did shoot the guy with the weapon.    (Poorly phrased) "Medic" is the only one that should be arrested.