If you buy your ticket by credit card and use the computers at the big metro stations to print out your ticket, you really never encounter anyone. Dude looks at your ticket from two-three feet away as you are fighting to get down to a good seat when the gates open, and the ticket-taker once the train is moving doesn’t do more than take your ticket–at least in my experience. Have never seen a bombsniffing dog, rarely even see Amtrak police. (I say this, too, with the hope that this is history since yesterday–that new rules are in effect–I hope.) I confess that everytime I do the NY-Philly-DC trip, I am reminded how simply amazing it is Madrid has not happened here. Maybe that’s kudos to the DOJ and others. But I still wonder, too, if we’re just lucky, in some specific respects like rail travel (MetroNorth, Long Island Railroad…).