This article covers a pack that is very versatile. It has three different functions that are performed with basically the same contents. It is critical that all survivors have access at a moment's notice to a pack of this type. This pack is designed to keep a survivor alive for a minimum of 72 hours while completely isolated from their group. The goal of this pack is to keep you alive long enough to make contact with your group, escape from a compromised fortress, or to be carried by vehicle crew members or infantrymen while on patrols or during campaigns. Water Shelter Food Defense Gear