 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, she would have identified the rooftop as a primary area of concern, which raises an obvious question.