The Beltway Snipers were John Allen Muhammad and Lee Boyd Malvo who went on a shooting spree in the Washington D.C. area in October 2002, killing 10 people and injuring 3 others over the course of 3 weeks. They were arrested on October 24th after an HVAC mechanic tipped off police to two men sleeping in a car, where police found a rifle matching the bullets from 11 of the 14 sniper attacks. Both men were convicted, with Muhammad sentenced to death and Malvo sentenced to life in prison without parole.