The United States federal government, American Red Cross, and surely countless other governments and NGOs recommend that families have Emergency Survival Kits in their homes in case of a natural or manmade disaster, equipped with many different kinds of supplies, including a two-week to one-month (in some cases longer) supply of non-perishable food.
In an emergency, of course, one is permitted to eat whatever is available and can support survival. But what about actively preparing for such an emergency by building a survival kit equipped with non-Kosher food? Does it make a difference if the non-Kosher food one can purchase has a longer shelf-life than what one can purchase or prepare that is Kosher? Is one allowed to disregard a Kosher item that is available that is simply unpleasant and unpalatable? Does it matter if the cost of Kosher food fit for an emergency kit is cost-prohibitive?