Christopher Thomas is the director of Government Marketing at Esri. He is a subject matter expert in government, technology, geographic information systems, marketing, and global business development. His books include GIS for Decision Support and Public Policy Making, Standards for Success: GIS for Federal Progress and Accountability, and Building a Smarter Community: GIS for State and Local Government.Keith Mann is a principal content strategist for Esri Press. He is a writer, developmental editor, and contributor to books, such as the GIS for Science series and the Applying GIS series of books, including Delivering Water and Power, Building a Smarter Community, Moving Forward, Valuing Place and Purpose, and Designing Our Future.