Maggie: I would say he is better than damn good. Maybe a competitive shooter? Or a hunter? Maybe military?
OA: I'm going with door number three.
Maggie: Why?
OA: A hunter doesn't go for the head. I don't see any shell casings. A competitive shooter would've left his brass for someone else to clean up.
Maggie: Well, that leaves military then.
OA: These buildings. It's a fishbowl. No way he would have camped out here in the open. He needs cover.