the power of the world's mightiest military with the agility of the world's most fearsome terrorist network. They would have to become a "team of teams"-faster, flatter, and more flexible than ever. In Team of Teams, McChrystal and his colleagues show how the challenges they faced in Iraq can be rel­evant to countless businesses, nonprofits, and or­ganizations today. In periods of unprecedented crisis, leaders need practical management practices that can scale to thousands of people-and fast. By giving small groups the freedom to experiment and share what they learn across the entire organiza­tion, teams can respond more quickly, communicate more freely, and make better and faster decisions. Drawing on compelling examples-from NASA to hospital emergency rooms-Team of Teams makes the case for merging the power of a large corporation with the agility of a small team to transform any organization.