In his forthcoming book, former Homeland Security Secretary Michael Chertoff, warns about the U.S. becoming complacent and returning to a “September 10 mindset.” But he is equally cautionary about going too far in the other direction. “There are two opposite extremes that must be avoided,” he writes in the book, Homeland Security: Assessing the First Five Years (University of Pennsylvania Press), “one, hysteria and fear, and the other, complacency and almost blithe disregard of the threats we face.” In fact, much of the book attempts to find the right balance in policies and attitudes to keep the nation safe.