But he was already gone. She heard the front door open and slam shut.

Dylan ran to the end of the driveway. He was far from the only one. People up and down the street were streaming out of their houses, wondering what was happening.

Everyone looked to the west, where the heavens were turning orange. Great balls of flame leapt up into the sky.

Dylan glanced back at his house, saw his mother coming out the front door.

“Mom, come see!” Dylan cried. “It’s beautiful!”

Forty-Eight

Over the weeks and months that followed, the National Transportation Safety Board, or NTSB for short, would conclude, although not conclusively, that the Lucknow Disaster, as it would come to be known, was caused by a “hot box.”

A “hot box” was in actuality a lubricated journal bearing on one of the tanker car’s wheels. It was believed that the lubricant had leaked out, which caused the bearing to overheat. Sparks from the overheating would have progressed to fire, and before long the axle would break, causing one of the car’s wheels to fall off. These so-called “hot boxes” were all supposed to have been phased out years earlier, but clearly some cars were still equipped with them.

Once the wheel fell off, that car—the forty-third in a ninety-two-car train that was being pulled by one Albany & Bennington and two CSX diesel engines—slipped off the rails. And given that it was coupled at each end to other tanker cars, they were yanked off the tracks. And so on, and so on, until more than half the cars that made up that freight had derailed before it came to a stop.

When the cars crashed into each other, some of the them exploded. In a chain reaction effect, almost every car that exploded would set off one or both of the cars to which it was coupled. Those cars contained such chemicals as styrene, propane, caustic soda, and, most critically, chlorine.

Many people were reminded of an incident north of the border, near Toronto, more than two decades earlier, when several chlorine-filled cars derailed. Chlorine gas, being heavier than air, displaces oxygen. People exposed to chlorine gas would be unable to breathe, and the gas they inhaled would burn the lining of their lungs.

And they would die.

Fearing an explosion was imminent, authorities back then ordered a mass evacuation, and in the end the cars did not blow up, and no one died.

Lucknow would not be so fortunate. As the residents would soon discover.

The first car derailed at 7:48 p.m. The others that ran off the rails did so in quick succession. The explosions were immediate. Two propane cars that blew up almost simultaneously sent dark clouds billowing nearly a mile into the air. Smoke was seen from as far away as Brattleboro.

There was blast after blast, likely leading many to believe, at first, that there was an earthquake.