Recent natural disasters, such as the earthquake and tsunami in Japan, have brought home the reality that companies need to plan for supply chain disruptions lassting months rather than days or weeks, says Tim Feemster of Grubb & Ellis. While such incidents may be rare, extended global supply chains have much greater overall exposure today, he says. He explains why and how companies should rethink their use of single-source suppliers and their safety stock policies. [Run Time (Min.): 9:43]