As Sandy hammered the northeast United States this week killing more than 100 people, contingency plans were washed away and businesses had to improvise as the storm knocked out power to millions and stranded entire communities.
Internet sites were kept online only because an impromptu bucket brigade ferried 5-gallon jugs of diesel fuel up 17 stories to a rooftop generator. Billions of dollars of stock trades were frozen and sidelined. Even the United Nations closed its complex when flood waters knocked out power.
Some of the world's largest companies had contingency plans but in many cases they could not withstand the fury of the raging waters that poured into parts of the five boroughs that make up New York City.