Seriously, good neighbors make good fences. One of the first things that will go when the Bad Times come is regional civility and trust. Battle lines will be drawn between towns and communities in a fight over the last pockets of supplies, industry and production. People protect their family and their friends. Make friends with people in your neighborhood. When unknown terrorists attack our major cities with nuclear bombs, having a strong local network of friends will put you in a better position to ride out the few decades of chaos sure to follow.