What would happen if a terrorist blew up a New York subway car? The system would shut down for about twelve hours or so, and then all but the one track would start running again.
Compare this to what's happening now, with the NYC transit union on strike. The union has done what Osama has not been able to. Economically, what the union is doing to the city is about a hundred times worse than terrorism, and it deserves the same enmity.
These greedy stiffs earn about as much as policemen and firefighters, and much more than schoolteachers, merely to drive around in circles all day. Fire them and replace them with the countless New York workers who I'm sure would jump at that offer.