You pose a few very good questions that right now are not applicable but in the near future, after I transfer, will require more review of my EDC.
  
As far as being driven or driving off the raod and not being found, there is very little chance of that due to regular military police patrols along the roads I take to the office.  As far as by building/home being destroyed by a disaster, I would have to say that it is no less than anywhere else.  They are both standard military issue and should hold up if something happens.  
As far as what I wear, well I do wear utilities to work, so sturdy boots and clothing are included.  I have spare EVERYTHING which doesn't impress the Mrs. until she needs something.  I have all key numbers in my wallet and I have the card number memorized, so I good there.
I am impressed with what you carry in your EDC.  Where do you put it all?  I assume you carry a PSK with wuite a bit in it, but what about the tube tent?  Just curious.
Garrett
 
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On occasion of every accident that befalls you, remember to turn to yourself and inquire what power you have for turning it to use. - Epictetus