It was February 12, 2005, when an electrical fault on the 21st floor of the Windsor building in Madrid started a small fire. The building was unoccupied and the fire was undetected for quite some time before the city’s fire officials were notified. By the time they arrived, the magnificent 32-story structure was essentially lost. All that firefighters could do was to try for the next 18 hours to keep the fire from spreading to adjacent structures. There was no impact from a jumbo jetliner, and this fire lacked the thousands of gallons of jet fuel that so readily accelerated the World Trade Center fires. It was just a little electrical problem. So how could this fire spread so uncontrollably that it consumed eleven higher floors and turned the fourth largest structure in Spain’s capital to rubble? Unfortunately, we may not be able to avoid such disasters where the perimeter...