So different from those of the past, today's supply chains require new strategy, analysis and planning, says Steve Martin, vice president of supply chain excellence at Ryder System. He discusses current marketplace realities and their impact on sourcing, sustainability, and inventory optimization in the midst of unpredictable demand.

Following a number of recalls due to tainted products, the government is getting involved in the process of ensuring food safety throughout the supply chain. Tom Kozenski, vice president of product strategy with RedPrairie Corp., discusses how companies should respond.

John Caltagirone, vice president of supply chain strategy with The Revere Group, traces some of the major challenges that companies face as they prepare - or fail to prepare - for a resurgence in economic activity and customer demand.