In Chapter 4 of 16, environmental management expert Andrew Hutson meets Washington Post Pulitzer Prize-winning photographer Michael Williamson flying from Washington D.C. to Chicago. Hutson, then a business process consultant, finds inspiration in Williamson's project riding horses with Mexican mounted police doing drug control. That night Hutson invests time identifying and pursuing a purpose more aligned with his passions and interests. He goes on to earn a Public Policy PhD from University of North Carolina, join the Environmental Defense Fund, and help Wal-Mart to make its global supply chain more environmentally sustainable.