The most important preparation: be friendly enough with your neighbors that you look out for each other. You can hate each other in general: so long as you won't allow looters in the neighborhood, and you can force yourself to get along enough to share/divide labor (in whatever way it turns out you need).
In the worst disasters preppers prepare for - odds are they die, so make sure your neighbors know what plans you have, if you die (or just you are out of town on vacation) your preparation can save someone else's life.
In the worst disasters preppers prepare for - odds are they die, so make sure your neighbors know what plans you have, if you die (or just you are out of town on vacation) your preparation can save someone else's life.