The United States Government provides safety and emergency preparedness information on a number of different websites and publications. Here are two that provide advice about steps necessary to be prepared for both natural and manmade disasters.

The Federal Emergency Management Administration [www.fema.gov]
Contains a library of plans and helpful tips for preparedness for all kinds of emergencies

The Homeland Security Administration Consumer Information [Ready.gov]
Focuses on manmade emergencies and provides evacuation planning and supplies to
consider