We have several major bases surrounding us so we might either be ground zero or get it from all sides. I worry about North Korea as well. The threat when I was a kid was all over the news, tv and movies. I remember taking a tour of a bomb shelter at the State Fair as a kid. Our world isn't any safer than it was when I was a kid. We've always tended to live in a bubble of assumed safety here in the States. 911 kind of broke our innocent about that.