I ride a train everyday that runs underneath the US Capitol grounds.
Yes, good point, I hadn't thought of that kind of situation. I was referring more to your basic, city-to-city train service. Pray no one tries to detonate a bomb under the Capitol any time soon.
I'm surprised that, if they were serious about protecting people and property, they haven't implemented this shit for rail...
That's why it's as much a charade as anything else. Imagine airport-style screening for Metro. No way, you might as well not have the transit system at all, because it would become completely useless for people who need fast, easy, twice-daily transportation.
You know, in places like Israel, you hear all the time about bombs on buses and at nightclubs, etc., because that's where people congregate and it's easy to get explosives there. But people still take the bus or go out because it's easy and desirable/necessary to do so. It's an unfortunate fact, but a reality that as long as there are crazy motherfuckers in the world, we're going to have to accept some risks in order to enjoy the conveniences and comforts we expect to have in a free society.