Yes.

[ He absolutely could. It doesn't mean it wouldn't sicken him, that he wouldn't be horrified later, that he wouldn't hate himself for what he'd done. But kill a man because he wanted to, because he was angry, yes, definitely yes. He'd like to think he's better than that now, but. He isn't sure about that. ]

I'm a soldier, remember? Killing's basically what I'm for. But you know what's the worst part, about killing a man? The thing that they don't prepare you for?

[ Have a guess. ]