"...we are now looking in our strategy to go beyond the question of securing our borders, to look at the issue of how do we secure the interior: How do we protect cities, major urban areas in this country from a nuclear or a radiological bomb that was fabricated inside the country? How do we prevent someone from getting a hold of radioactive material in the U.S., making a dirty bomb, and then trying to detonate it in New York, or Chicago, or Los Angeles?...to address that next level of concern, we are unveiling our Securing the Cities Initiative, which is a program to see how we can deploy this kind of detection equipment [Advanced Spectroscopic Portal Program] not only at seaports and ports of entry by land, but in cities and around cities, so we could detect a truck coming into a city with a dirty bomb, even if it didn't cross an international border... we are currently working with the city of New York, with the police department.. to begin the process of planning and deploying a pilot of this Securing the Cities system of internal radiation-detection equipment, so we can move to this comprehensive coverage of protection against nuclear threats. That, I think, is one of the highest priorities for this Department and for this administration". (DHS, Remarks by Homeland Security Secretary Michael Chertoff and DNDO Director Vayl Oxford at a Press Conference to Announce Spectroscopic Portal (ASP) Program Contracts, July 14, 2006)