LSP and I had a discussion of the value of being a television prepper this past week. On these TV shows, normal people explain how their homemade defensive systems will defeat the godless hoards of inner city people/zombies who are coming to take their 30 year supply of beef jerky & clean water and to ravish their plump, frumpy women who have just as many teeth as the average jack-o-lantern.
General George S. Patton jr. said, "Fixed fortifications are monuments to the stupidity of man." With due respect to the TV preppers who advertise their pathetic efforts, Gen. Patton forgot more about combat than these well intentioned people ever knew.
And sadly for the preppers, it usually doesn't take anyone who was as astute as Patton to put them under the sod, take their food, water and 'earth mother' women as slaves.
This is my point. If you are going to prepare for the end, you shouldn't advertise it. I myself take prudent precautions against possible calamity from earthquakes to civil unrest. But my neighbors don't know much about what those precautions are (beyond the neighborly Muslims who have tried to assert themselves and found the first line of defense).
If the inner city people arrive at the gates of your compound demanding that you and yours "surrender the booty" you've likely screwed up your preparations beyond all proportion to reality and rationality.