Threats of Terrorism

This week, the government has stepped up warnings of more attacks on the U.S. We?ll talk about the challenges of predicting terrorism, where these warnings come from and what the average person is supposed to do. Laura talks with Tom Trout, political science professor, University of New Hampshire www.unh.edu and Michael Vatis, director, Institute for Security Technology Studies at Dartmouth College www.ists.dartmouth.edu.