Community
The American Red Cross (ARC) has resources and publications to help connect people and prepare communities for disasters.
Prepare in Your Community 
The Federal Alliance for Safe Homes (FLASH) has resources to help prepare neighborhoods and housing for emergencies and recovery after disaster strikes.
http://www.flash.org/
National Night Out promotes communities to plan and work together.
National Night Out
U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, shows how model communities have managed or planned for large-scale emergencies.
Model Communities Link EMS and Public Health