Since the attacks of 9/11, billions of dollars and countless resources have been committed and expended in the attempt to make the nation more secure. Introduction to Homeland Security: Second Edition is written by a team of homeland security and justice professionals on the cutting edge of the field. The text is a comprehensive examination of current and future challenges and explores how the United States has chosen to confront these threats with both its military and civilian agencies. Topics include: A history of homeland security in the United States The mission of the various agencies in the Department of Homeland Security and Department of Defense The foundations of emergency management: mitigation/prevention, preparedness, response, and recovery Inter-agency planning and cooperation and private partnership A survey of the most significant natural disasters and accidents, explored through case studies International and domestic terrorism and threat groups The impact of transportation and border security issues and the violence occurring in the Southwest Globalization and the role of intelligence in homeland security Future challenges in the field of homeland security Each chapter begins with objectives and ends with a summary, key terms, and discussion questions. Ample references encourage further study and research. The book is a premier text for criminal justice, homeland security, national security, and intelligence programs in universities and an ideal reference for professionals as well as policy and research institutes.