Understanding Homeland Security

"An excellent introductory text to homeland security, it provides a thorough and informative overview of the topic that is appropriate for undergraduate courses on homeland security."

―Mark Feulner, Florida State University

Dr. Gus Martin’s Understanding Homeland Security, Second Edition is a thoroughly updated textbook offering much-needed insight into the complex nature of issues addressed by the homeland security enterprise. This comprehensive textbook addresses such subject areas as emergency management, terrorism, criminal justice administration, intelligence, armed conflict, and social environments. Martin’s pedagogical approach is designed to stimulate critical thinking in readers, allowing them to not only comprehend the fundamentals, but also evolve with the very dynamic nature of homeland security. 

The Second Edition introduces readers to homeland security in the modern era, focusing particularly on the post–September 11, 2001 world. Reviewing theories, agency missions, laws and regulations governing the homeland security enterprise, this book keeps readers on the forefront of homeland security.   

Clarence Augustus “Gus” Martin is Professor Emeritus in the Department of Criminal Justice Administration at California State University, Dominguez Hills, where he teaches courses on criminal law, terrorism and extremism, and the criminal justice system. He served as the founding Chair of the department and as the 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 Publications, 2025); Terrorism and WMDs: Awareness and Response, Third Edition (with John Pichtel, CRC Press, 2025); Understanding Homeland Security (SAGE Publications, 2024); The Handbook of Homeland Security (with Scott Romaniuk and Martin Scott Catino; Routledge, 2023); Essentials of Terrorism: Concepts and Controversies (SAGE Publications, 2022); Terrorism: An International Perspective (with Fynnwin Prager; SAGE Publications, 2019); The SAGE Encyclopedia of Terrorism, Second Edition (SAGE Publications, 2011); Terrorism and Homeland Security (SAGE, 2011); and The New Era of Terrorism: Selected Readings (SAGE Publications, 2004). He is also author of Juvenile Justice: Process and Systems (SAGE Publications, 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.