Having a plan and working with others will make all the difference is a survival SHTF situation.  SPIKE was designed based on the Green Beret mission of training and organizing others to become a unified force with a focused mission or goal.  This article from the Daily Sheeple gives a great comparison of how things play out with a plan compared to without one.

http://www.thedailysheeple.com/why-you-should-think-like-a-green-beret-instead-of-a-doomsday-prepper_022013