From the Federal Citizen Information Center . . .

Everyone should have a plan.

The likelihood of you and your family surviving a house fire depends as much on having a working smoke detector and an exit strategy, as on a well-trained fire department. The same is true for surviving a terrorist attack or other emergency. We must have the tools and plans in place to make it on our own, at least for a period of time, no matter where we are when disaster strikes. Just like having a working smoke detector, preparing for the unexpected makes sense. Get ready now.

See link below for detailed discussion of -
Emergency Supplies
Specific Terrorists Threats
Natural Disasters
Family Communications Plan