ABSTRACT
Left-and right-wing ideologies ◾ Single-issue groups (white supremacist, environmental, animal rights) ◾ Religious groups (al-Qaeda, Hezbollah) ◾ Nationalistic groups (violent Islamic alliances) ◾
Such disasters include
Infectious diseases with the possibility of pandemics ◾ Meteorological and geological events, which include hurricanes, tornadoes, ◾ floods, earthquakes, volcano eruptions, drought, and famine
Such accidents include
Industrial hazards and events ◾ Infrastructure failures ◾ Utility defects and failures (electric, gas, electronic, telephone, computer, ◾ etc.)
Homeland Security has identified 17 sectors of critical infrastructure and key resources, each intersecting in some manner with physical, cyber, and human elements:
1. Agriculture and food production 2. Banking and finance 3. Chemical industries 4. Commercial facilities 5. Commercial nuclear reactors, wastes, and materials 6. Dams 7. Defense industries 8. Drinking water and water treatment systems 9. Emergency services 10. Energy 11. Government facilities 12. Information technology (including cyber security; the uninterrupted use
of the Internet and the communications systems that comprise our cyber infrastructure)
13. National monuments and icons 14. Postal and shipping 15. Public health and health care 16. Telecommunications 17. Transportation systems
The Homeland Security Advisory System The Level of Threat The Department of Homeland Security will advise the public of the level of threat regarding a terrorist attack.
