A lot has changed in 50years. Number, size, accuracy of weapon impacts. Farming&#x27;s reliance on mechanization, pesticides, fertilizer. Way more food is manufactured&#x2F;processed. How many people even know what to do with a sack of flour and a firepit. Transportation changes, trucking vs rail. I&#x27;m not sure but the general push for efficiency, JIT warehousing, I wonder if our food stocks on hand is the same. Also, I&#x27;m guessing the fall of USSR, rise of Terrorism as new bugaboo. I wonder how much study, effort, and prepardness USA government has put into full scale nuclear war &quot;defense&quot; of late.<p>Population increase.