A lot of things didn’t happen at the Olympics this year, all of which were extensively prepared for. A terrorist incident, a breakdown of the London rail system, power blackouts, volcanic ash clouds, flooding, an outbreak of infectious disease—the London organizing committee (LOCOG) and the International Olympic Committee (IOC) spent years thinking about every scenario they could imagine. Simulations of security incidents were rehearsed, and contingency plans for mass evacuations or emergency situations were put in place.