Homeland security is an eclectic field of study that seeks to prevent, protect against, mitigate, respond to, and recover from the threats and hazards that pose the greatest risks to the U.S. This article applies the theory of complex adaptive systems (CAS) to homeland security, finding that CAS offers strategies to mitigate the risks and fragility of homeland security policy and practice. 


Ted Lewis

Ted Lewis, Ph.D., is a retired professor of computer science and former executive director of the Center for Homeland Defense and Security at the Naval Postgraduate School. He spent 40 years in academic, industrial, and advisory capacities, ranging from academic appointments at the University of Missouri-Rolla, University of Louisiana, and Oregon State University to Senior VP of Eastman Kodak Company and CEO and president of Daimler Chrysler Research and Technology, North America. Dr. Ted published over thirty books and 100 research papers. He is the author of Critical Infrastructure Protection in Homeland Security: Defending a Networked Nation (2006 & 2014) and Book of Extremes (2014). Ted received his Ph.D. in computer science from Washington State University.

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No. 2 A Complex Adaptive Systems Theory of Homeland Security