No American city has done more to defend itself against a terrorist attack than New York. Its police department, 37,000 strong and larger than the standing armies of 84 countries, has transformed itself from a traditional crime-fighting organization into one that places a strong emphasis on fighting terrorism. A thousand cops have been assigned to work exclusively on a new "terrorism beat." And, in an unprecedented move, New York has even stationed its own cops overseas. These changes are all based on New York's belief that having suffered two devastating attacks while the federal government provided for its protection, the...