You use a lot of heavy cast gray iron parts in your furniture manufacturing business and you have an American supplier who does not give you very good service. Deliveries are often late, quantities may be below what you ordered, and parts may require filing or grinding before use. But, they always arrive, and they always work, more or less. But now a supplier in Argentina offers you castings for half the price, but sea shipment is very slow and filled with delays, and air shipment is expensive and also subject to availability of airlift: there may not be space on a flight for heavy items and so they get bumped. Describe how you make a decision here. Volume is not large enough to maintain two suppliers. What are the risks and costs? Describe a good management strategy here.