This course introduces students to principles, concepts, and structures of an all-hazards approach to homeland security. The course begins with a brief overview of natural and man-made hazards and the federal, state, local, and international agencies created and reoriented to respond to these hazards since 2001. The focus then shifts to functional areas of homeland security, including intelligence, border security, transportation security, cyber security, critical infrastructure protection, and emergency response and recovery. The course concludes by considering how capabilities in each of these functional areas can be integrated and enhanced by risk assessment, planning, communications, and science and technology.