Part I • Foundations of Homeland Security
Chapter 1 • History and Policy: Defining Homeland Security
Chapter 2 • Homeland Security and the All-Hazards Umbrella
Chapter 3 • The Legal Foundations of Homeland Security
Chapter 4 • Civil Liberties and Securing the Homeland
Part II • Homeland Security Agencies and Missions
Chapter 5 • Agencies and Missions: Homeland Security at the Federal Level
Chapter 6 • Prediction and Prevention: The Role of Intelligence
Chapter 7 • Agencies and Missions: Homeland Security at the State and Local Levels
Part III • The Terrorist Threat and Homeland Security
Chapter 8 • Sea Change: The New Terrorism and Homeland Security
Chapter 9 • The Threat at Home: Terrorism in the United States
Part IV • Preparedness and Resilience
Chapter 10 • Porous Nodes: Specific Vulnerabilities
Chapter 11 • Always Vigilant: Hardening the Target
Chapter 12 • Critical Resources: Resilience and Planning
Chapter 13 • Critical Outcomes: Response and Recovery
Part V • Homeland Security: An Evolving Concept
Chapter 14 • The Future of Homeland Security

Clarence Augustus “Gus” Martin is a Professor and founding Chair of the Department of Criminal Justice Administration at California State University, Dominguez Hills, where he teaches courses on terrorism and extremism,   criminal law, and the criminal justice system. He has served as founding Director of the School of Public Service and Justice. He also served as Associate Vice President for Human Resources Management, Acting Associate Dean of the College of Business Administration and Public Policy, Associate Vice President for Faculty Affairs, and Chair of the Department of Public Administration. He began his academic career as a member of the faculty of the Graduate School of Public and International Affairs, University of Pittsburgh, where he was an Administration of Justice professor. His current research and professional interests are terrorism and extremism, homeland security, and the administration of justice.Dr. Martin is author of several books on the subjects of terrorism and homeland security, including Understanding Terrorism: Challenges, Perspectives, and Issues (Sage, 2025); Terrorism and WMDs: Awareness and Response, Third Edition (with John Pichtel, CRC Press, 2025); Understanding Homeland Security (Sage, 2024); The Handbook of Homeland Security (with Scott Romaniuk and Martin Scott Catino; Routledge, 2023); Essentials of Terrorism: Concepts and Controversies (Sage, 2022); Terrorism: An International Perspective (with Fynnwin Prager; Sage, 2019); The SAGE Encyclopedia of Terrorism, Second Edition (Sage, 2011); Terrorism and Homeland Security (Sage, 2011); and The New Era of Terrorism: Selected Readings (Sage, 2004). He is also author of Juvenile Justice: Process and Systems (Sage, 2005).Prior to joining academia, Dr. Martin served as Managing Attorney for the Fair Housing Partnership of Greater Pittsburgh, where he was also director of a program created under a federal consent decree to desegregate public and assisted housing. He was also Special Counsel to the Attorney General of the U.S. Virgin Islands on the island of St. Thomas. As Special Counsel, he occupied a personal and confidential position in the central office of the Department of Justice; sat as hearing officer for disciplinary hearings and departmental grievances; served as chair of the Drug Policy Committee; served as liaison to the intergovernmental Law Enforcement Coordinating Committee as well as to the Narcotics Strike Force; and provided daily legal and policy advice to the Attorney General. Prior to serving as Special Counsel, he was a “floor” Legislative Assistant to Congressman Charles B. Rangel of New York. As Legislative Assistant, he researched, evaluated and drafted legislation in areas of foreign policy, foreign aid, human rights, housing, education, social services, and poverty; he also drafted House floor statements,  Congressional Record inserts, press releases, and news articles; and he composed speeches, briefing materials, and legislative correspondence.Dr. Martin received his A.B. degree from Harvard College, J.D. from Duquesne University Thomas R. Kline School of Law, and Ph.D. from the Graduate School of Public and International Affairs at the University of Pittsburgh.