These websites provide relevant information on citizen preparedness:
Citizen Corps: The national Citizen Corps website with information on emergency preparedness, Citizen Corps Councils nationwide, and current Homeland Security news.
DC Emergency Management Agency: A Family Preparedness Guide and other emergency management information for the District of Columbia
Are You Ready? A Guide for Citizen Preparedness. This guide has a separate chapter on National Security Emergencies, including terrorism, chemical and biological weapons, and nuclear and radiological attack.