I was in a lab at UNC. Someone set up a TV in the foyer and a group of 30 or so people watched things unfold. I remember seeing the burning buildings and thinking that the number of deaths would be relatively small...and then the buildings crumbled...and then the events at the Pentagon were announced. I spent the rest of the day across the street at the hospital helping the staff prepare in case we started getting overflow from DC hospitals...never happened but it was surreal.