Counter Terrorism

President Bush has declared a war on terrorism, but it's not clear exactly what that means. We'll talk about what it takes to track and catch terrorists before they perpetrate acts like the attacks in New York and Washington DC. Trish's guests are Michael Vatis, director of the Institute for Security Technology Studies at Dartmouth College http://www.ists.dartmouth.edu/, and Walt Purdy, with the Terrorism Research Center based in Virginia http://www.terrorism.com/index.html.