Trowa and I stayed at a hotel across the street from King's Cross station last year and took that train frequently during our vacation, so yeah, it's kind of freaky to see this happen in a place with which we became familiar. I'm always that much more weirded out to hear about bombings and attacks in places that I've visited and can identify visually; I guess that just makes it easier for me to put myself in the shoes of people who were there when attacks occurred.

I think you're right, that it's possibly more upsetting that they were targeted by other than the heretofore familiar IRA types. I think it's scarier to feel like you have shadowy international enemies somehow than the usual domestic ones, even if the end result (bombing, carnage) is the same.