I read this at work and was itching to reply. I hope you are both feeling a bit less shaken up now, Sarah, Patience, and Ana, and I'm glad you're all accounted for. I'm still appalled by the reasoning behind this incident.
I'm still rather traumatized by 9/11 (much bigger scale, I know, not to diminish the present attack), and often think about how vulnerable I am taking the train, subway, and hanging around Penn Station each day. I have become much more conscious of how fragile life is since then.