Frightening! Through the use of extensive interviews, Koppel illustrates how fragile the infrastructure of our power grid really is. Whether through cyberterrorism or a physical act of terrorism, we are at risk for a major disruption to our system. Koppel explains how the interruption will be much worse than a mere days long period, and how it may stretch up to a year or more. He also points out the "head-in-the-sand" mentality of our government officials to the issue. Let's hope this book brings about some much needed change to our way of thinking! Excellent book. (I received this book from NetGalley in exchange for a fair review).