AS of now, the fire is pretty much out. A little bit of facade is still burning. It took out what appears to be a third of the top two floors (I work a few blocks away). The fireman are walking around the roof so it appears to be over. They say everyone got out okay. They are saying there were welders on the roof, but no word on whether that was the cause.
I'd love to write more...but there is a tournament I need to get to...