PTSD doesn't automatically mean tears? The fact that he tried very hard to continue talking, yet the emotion built more and more no matter how hard he tried to control it, I would bet he has and will have PTSD. Despite what many think, taking a life of another human, even if they are disgusting pedophiles or other evil types, still has an effect. Especially on a 17 yr old.

Kyle was faced with the decision, in a split second to either be attacked and possibly loose his life or take the life of his attackers. He choose correctly, testament to whoever trained him with firearms and the values he was bought up with. It still comes with a price.