Terry Lynn Nichols is an American domestic terrorist who was convicted for his role in conspiring with Timothy McVeigh in the 1995 Oklahoma City bombing, which killed 168 people. Nichols was born in Michigan and met McVeigh during a brief stint in the U.S. Army. He helped plan and prepare the bombing of the Alfred P. Murrah Federal Building in Oklahoma City on April 19, 1995. In 1997, Nichols was convicted in federal court of conspiracy to use a weapon of mass destruction and eight counts of involuntary manslaughter for killing federal law enforcement personnel. He was sentenced to life imprisonment without the possibility of parole after the jury deadlocked on the death penalty. Later, in 2004, he was convicted in Oklahoma state court of 161 counts of first- degree murder, first-degree arson, and conspiracy related to the bombing. The state jury again deadlocked on the death penalty, so Nichols received 161 consecutive life sentences without parole, the longest prison sentence ever given to an individual. He is currently incarcerated at ADX Florence, a supermax prison in Colorado

. Nichols was not convicted of first-degree murder federally because there was no evidence he rented the Ryder truck used in the bombing or purchased the bomb ingredients, and he was at home in Kansas when the bomb detonated. Some jurors may have believed he withdrew from the conspiracy before the bombing. Despite this, he was found guilty of conspiracy and involuntary manslaughter

. He has served his sentence since the late 1990s and remains in federal custody, sharing a cell block known as "Bomber's Row" with other notorious inmates