As a Brit it's interesting to see how the default American response to anything out of the ordinary seems to be "we must be under attack!" I honestly think you

As a Brit it's interesting to see how the default American response to anything out of the ordinary seems to be "we must be under attack!" I honestly think you are mistaken. It certainly crosses some peoples' minds, and I imagine that any issue will make someone consider it might be terrorism. But I bet if a bunch of smoke came pouring out of your tube, somebody would wonder if a bombing was attempted. I don't think we're that different that way.