Joshua Isaac Nichols, son of Oklahoma City bombing co-conspirator Terry Nichols, has pleaded guilty to kidnapping and armed robbery in Las Vegas, avoiding a trial and resulting in a minimum of five years in prison. Hundreds of people gathered to commemorate the 20th anniversary of the bombing, which killed 168 people. Joshua and his co-defendant, George William Moya III, face a maximum of life in prison when they are sentenced on April 16 and 19 respectively.