text:  They have determined that the shooter was on a rooftop kind of right outside the complex about I think it was like 400 yards away. And I think they're trying to figure out exactly why there wasn't any kind of Secret Service positioned on that rooftop and trying to get to the bottom of that. Just to be clear, because, of course, as you know, the details matter. Was it 400 yards or 400 feet? That's what I'm not clear on.