The third track from NIN's latest CD is called "Survivalism" and the character talks about how life is in the world of Year Zero. The term references a person is is ready for 4 things: Natural Disasters, Man Made Disasters, Loss of society benefits (water, electricity) and the collapse of society as a whole. It fits perfectly to paint the picture of Year Zero. You can listen to my remix of the song by clicking the link, or the picture.
Picture by me.