Nor have I. And I hope we don't.
All that the people "on the ground" in Detroit-Chicago-Toronto-Ottawa-New York knew was that the lights were out, in their part of their city.
In the post 9/11 world, caution bordering on paranoia might be prudent.
Especially given the arrests at SeaTac the day before.
I guess my point is: these days I would tend to avoid bunching up as a target...