If you have ever paid attention to the news after a disaster such as hurricane Katrina, you know one of the first things that happen is grocery stores are swamped or invaded and within a day or so all the food is gone. Many times the damage to the infrastructure either closes roads, or electricity is knocked out so refrigerators or freezers can’t run, therefore even if stores could get more food they may not have any way of operating for a few days or even weeks.