 Good morning. Is it possible that kid was already in the building and got up on the roof through an opening inside the building? I've been asking that question because some of those commercial roofs have hatches you can climb up so that air conditioning, HVAC technicians can work up on the roofs with the air handlers and so forth. That's a great question. We don't know the answer to that. But there is no excuse for that building not to have been monitored.