Comment: Understood.

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In reply to comment: If they are shooting at you (see in situ)

Understood.

But brick or stone veneer in attainable quantities will serve no purpose. 50 cal will go through like butter. Water is the only viable solution for the average person. Even at that, it would take a cavity of roughly 14 inches across filled with water to be sufficient.

You are correct concerning an escape tunnel.

I found this so have edited this to add proof:

http://www.youtube.com/watch?v=yvSTuLIjRm8

Josie The Outlaw http://www.josietheoutlaw.com/

"What if the American people learn the truth" - Ron Paul