From the page: "Preparations for the flight to safety after a cataclysmic event always include, at their core, emergency food contingencies. Most preppers take the measure of stockpiling foods that can survive a long shelf life and that are suitable for light-weight travel. Dried foods typically dominate the shelf space as they are the most durable and travel-friendly food alternative.
Just about anything can be dried or freeze-dried, so there can never be any complaints about variety. The real issue is which foods would provide the family on the move with the best possible chances of surviving a trek of unknown duration."