Martin O'Malley served as the Mayor of Baltimore from 1999 to 2007 and as the 61st Governor of Maryland from 2007 to 2015. He was the first leader to take CompStat—a crime-management system pioneered in New York City in the 1990s—and apply the same ideas at city- and state-wide scales. He currently resides in Baltimore, Maryland, with his family. Stephen Goldsmith was the 46th mayor of Indianapolis and also served as the Deputy Mayor of New York City for Operations. He is currently the Derek Box Professor of of the Practice of Uban Policy and Director of Data-Smart City Solutions at the John F. Kennedy School of Government at Harvard University. He has written The Power of Social Innovation; Governing by Network: The New Shape of the Public Sector; Putting Faith in Neighborhoods: Making Cities Work through Grassroots Citizenship; The Twenty-First Century City: Resurrecting Urban America; The Responsive City: Engaging Communities Through Data-Smart Governance; and A New City O/S: The Power of Open, Collaborative, and Distributed Governance.