@drd I remember being at NCSA with a population of scientists (many astrophysicists) and students (like me at the time) watching the events of that day unfold. Eventually, I believe it was Larry who told everyone they could go home, because it was clear people weren't in a state to work. Many of us just lingered to be with other folks similarly affected. Sad day indeed, and I avoid watching the footage if at all possible.