 or why he wasn't on the rooftop to begin with. Late last night, NBC News reported that, quote, the roof where the suspect was located was a well-known high-priority vulnerability. It was identified just the day before during a security walkthrough. Well, that obviously makes sense. You'd have to be blind to miss the rooftop. I could have brought my four-year-old daughter to that venue before the event and asked her to point out security vulnerabilities. And after I explained what a security vulnerability is,