Long shot of a plume of black smoke rising from a derailed train. Closer shots of tank cars on fire. One of the cars, which was carrying propane, explodes with an enormous ball of fire. Part of a tank car lies, burnt out, on the bank of a river. Fire fighters examine the aftermath of the explosion. The wreaked train is burnt out. Shots of nearby buildings on fire. Shots of the fire and smoke from the surrounding urban area. Flames billow through the city. More tank cars explode.