Families and individuals can use a simpler program of readiness to be safe. You don't have to think about every potential danger, you want to think about a solid and flexible solution.
Some Helpful Links for Deeper Information
Malcolm Mead
If you want to dive deeper, there is a huge repository of information and support made available by the US Government (FEMA, the Military, etc.). Here are a few deeper links that can help you better understand the basics of readiness. Emergency Management Institute - Independent Study (IS) | IS-22...
You don't have to be afraid
Malcolm Mead
A brief intro on how to think about danger in an emergency.