All the more reason to start growing food in the yard. We can diminish the need for supply line shenanagins if we perform the simple act of gardening, annuals, biennials, perennials. Little do we realize how much food, medicine and utility can be grown on the smallest piece of ground, and also stacked vertically above the ground. We are not talking about large acreage here. We are talking 1/4 or less. Read this article and start gardening!
http://www.guardian.co.uk/commentisfree/2010/dec/20/snow-supermarkets-tesco-food