How Safe Is Safe?

Four years after nine-eleven, we talk about the strategies to prevent another attack. When you can’t protect against everything, how much security is enough? Where do we draw the line between being protected and being paranoid? Jon Greenberg hosts. His guests are Don Bliss, Director of the National Infrastructure Institute's Center for Infrastructure Expertise and former New Hampshire State Fire Marshal, David Kotz, Executive Director of the Institute for Security Technology Studies at Dartmouth College, and Tom Trout, Associate Dean of the College of Liberal Arts at UNH whose teaching focuses on foreign and national security issues.