On June 4, 2004, a disgruntled middle-aged man named Marvin Heemeyer enacted his plan to take vengeance on the sleepy mountain town of Granby, Colorado. Angry at the town government and his neighbors, Heemeyer had armed and fortified a bulldozer, outfitting it with cameras and guns to build a homemade but formidable tank. This weapon on wheels, dubbed the "Killdozer" in subsequent media coverage, allowed Heemeyer to smash vehicles and buildings as he crunched his way through Granby.

Despite firing many shots at the first responders reacting to his rampage and leveling a number of buildings, Heemeyer's only human victim was himself. He died by suicide when the Killdozer became mired in the basement of a hardware store beyond hope of retrieval. The vehicle and its operator have since been f

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