One thing we all need to remember is that we all tend to focus on "gear" we might need and how to pack/carry it for a survival situation be it natural or human induced. The human body is very resilient and can survive along time without food or extra gear as long as it is hydrated. we can survive WEEKS without food as long as we stay hydrated. DEHYDRATION BECOMES AN ISSUE IN JUST HOURS IF NOT MINUTES DEPENDING ON THE SITUATION. A question we all must keep in the FRONT of our minds is "where are we going to get water"