Even though I live out in the country, use a well for water/irrigation...the very first thing that came to mind was "when the power goes out...the pump won't work!" So for this I have installed a bypass and a manual well pump (one of the newer models of the old style hand pump). This will allow drawing water from the well without power. Now you can one-up that by installing a solar powered pump to keep the house supply pressurized with no need to go outside. Food storage is great, however..it's not permanent solution to a long term problem. I would say to stock at least 6 months to a year's supply in non-perishables/freeze dried, but...to also have open pollinated non hybrid seeds to plant in order to grow food which is long lasting. Just as in my days working in network security, where I discovered the ultimate weak spot is the end user, but the end users lacks money to obtain tools, knowledge to provide themselves security. I started a free website and shared the tools and knowledge to help others (and what a success it was!!). Likewise, I have constructed a site Disaster Preparedness MRE's Freeze-Dried Food & Solar Energy to aid those who are unprepared for any disaster we routinely face, let alone a global one! I have used my years of practical experience with outdoor and urban survival and mostly from my life and surviving hurricane season. When I moved from South Florida to Central Florida, I came to find that not many had any idea of what they were about to experience during and after the hurricane hit. I can only imagine that when the global event takes place, the scale of needs and loss will be magnified.