 And back to how he's able to do this, there's some confusion about why he wasn't spotted. There are people that are talking about seeing this individual trying to point him out to police and law enforcement, but somehow they didn't pick that up. So this is going to be a situation that's investigated intensely over time. They're going to want to know what kind of weapon, where he got the gun, what his plans were, who his influences were, all of that. Luke?