This new case study examines how leading network technology provider Cisco responded to a tsunami in Japan that could have disrupted delivery from 250 key "Tier 1" suppliers. In addition to natural disasters, it shows how Cisco manages lean supply chain risks associated with political upheavals, regulatory mandates, economic uncertainty, rapid technological and customer change, capacity constraints, globalization, and more. Focusing on realistic issues and challenges throughout, it offers exceptional value to both students and practitioners. Authors: Maria Jesus Saenz, MIT-Zaragoza International Logistics Program; Elena Revilla, IE Business School.