hmm...how about the structral safety of the buliding. if it's an oldie, how stable is it if the corner of it burns? 45 people up above is bad...but how about those below with a possibly collapisable corner. and why is the media being pushed back...and back...
These old buildings are plenty tough. Remember, the fire wasn't helped along with jet fuel.
That is standard emergency operating procedure. Media is generally cordoned while an emergency situation is ongoing. Besides, the Chicago network affiliates all have helicopters and that's how they're getting the majority of their video.