"So the two teenagers laid you down on the grass and left the scene but you shot both of them in the back? I can hear the attorney now."
Unless your attacker turned around to retrieve a weapon or to attack another victem, shooting him/her in the back may be quite costly to the shooter.
If the attacker lives and testifies he/she was running away from you when you fired a round into their back.....oh gee.
Thats why I said that. If you have a chance to get away or if the attackers are leaving and you shoot them in the back, you will need to hire a better attorney then the lowlife.