For information about Homeland Security – 

Ultimate Security: All About Homeland Security
http://www.cctvcameraworld.com/ultimate-security-all-about-homeland-security.html

Official site of the Department of Homeland Security 
https://www.dhs.gov/

For information about Natural Disasters –
      Please check out the FEMA (Federal Emergency Management Agency) website – 

FEMA 
http://www.fema.gov/

Disaster Assistance.gov – ACCESS TO DISASTER HELP AND RESOURCES
https://www.disasterassistance.gov/

Red Cross
http://www.redcross.org/get-help

National Weather Service
http://www.nws.noaa.gov/om/hazstats.shtml

Natural Geological Hazards
https://www2.usgs.gov/natural_hazards/

Disaster Information
https://www.data.gov/disasters/

PreventionWeb – information of the disaster reduction community
http://www.preventionweb.net/countries/usa/data/

Online guide to government information and services:

USA.gov
https://www.usa.gov/