The document provides background information on Ted Kaczynski, known as the Unabomber, who carried out a bombing campaign against targets from 1978 to 1995 that killed 3 people and injured 23 others. It details Kaczynski's early life, education, career struggles, the bombings and evidence linking him to the crimes, including materials and a typewriter found in his remote cabin. Kaczynski was ultimately arrested in 1996 at his cabin in Montana and sentenced to life in prison.