The Living Dead
In this TL, a Russian biological weapon, known as the "Mediator" is discovered in Siberia, a reminant of an old Soviet Union weapons prgram. The people who recover it are a little-known terrorist group known as the "Sons of Prosperity", a copy to the "Sons of Liberty" during the American Revolutionary war. The Sons of Prosperity were able to smuggle in the bomb to the United States, and transported it to Denver, Colorado. As a main transportation hub, they set off the bomb in Denver International Airport on July 1st, 2010, causing massive mutations, releasing a virus that turned the people into "Zombies". The police and local military could not stop it, and ignorance of its deadliness let it spread to become a worldwide war for the survival of mankind.