The mission, authority, organization, role, function, and the fundamental terminology that affects homeland security in the United States is examined in this book. Homeland security demands quick, effective organization to operate in emergencies, but simultaneously defies it by the limited time frame and sheer scope of the problem. The author focuses on the five core missions of homeland security: preventing terrorism, securing borders, enforcing immigration law, safeguarding cyber systems, and ensuring resilience to disasters. These core missions require five common skill areas for homeland security operations: risk assessment, determining authority and capability to enact solutions, identifying organizational structure and functions, recognizing operational patterns, and applying analytical techniques to achieve the best performance possible. Unique features include the key points of contact, potential areas of conflict, legal and executive aspects, work flow processes and their analysis, examination of risk assessment, review of implementation and response, emergency services and logistics, and political issues. In addition, operational assignment of resources for intelligence, tactical response, investigations, prosecution, and confinement are discussed. A glossary of abbreviated terms frequently used is among the special features provided. With 18 illustrations, this up-to-date overview of homeland security and the necessary methods for implementation is a resource of valuable information.