Since 2001 the United States has created or restructured more than two counterterrorism organizations for every apprehension it has made of Islamists apparently planning to commit terrorism within the country. Central to this massive enterprise are the efforts of police and intelligence agencies to follow up on over ten million tips, the vast majority of which lead nowhere. In their new book, Chasing Ghosts, John Mueller and Mark G. Stewart try to answer a few simple, yet rarely asked questions: Is the chase worth the effort? Or is it excessive given the danger that terrorism actually presents? The authors will present their findings followed by questions and discussion related to the U.S. fight against terrorism. Please join us for what is sure to be a lively event.