 Investigators are still here in the neighborhood. You can see the shooter's house remains blocked off, but they've been going door to door interviewing neighbors to see whatever they can learn. The FBI has conducted more than 100 interviews. Liam Campbell lives across the street. The parents, I'd say, they're nice people. I've said hi or bye to them walking past, but the kid, I haven't talked to him much. Nobody really knows him. He sticks to himself.