I make it a habit to sit out snowstorms instead of trotting off to work.
If I were near any terrorist high value target on the way to work, I would do the same today.
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Plus I've been there, done that. I got rocked hard in '93 at the WTC bombing then and had half my family there in '01. It's no game and you can't do anything to stop it if you don't know it's coming.