You know, back in the days of the Cold War, when we had legitimate concerns about Chinese or East Bloc spies, we made it a point of pride that we let people photograph even military stuff, unlike the silly paranoid Commies. Nowadays, I suspect that the only reason that Chinese or Russian spies take pictures of our railroads is to take them home and laugh among themselves about our primitive railway infrastructure. ![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)