Anthony Fortuna was accused of telling the FBI in 2010 that he was offered $5,000 to join the scheme by someone who was being prosecuted by the government. The claim was false.
Kalamazoo federal Judge Paul Maloney sentenced Fortuna to the maximum punishment Monday.
Federal prosecutor Hagen Frank said Fortuna's criminal record began in 1994 — when he made a false fire alarm.
Fortuna pleaded guilty to the courthouse threat in September 2012 and also admitted to making false threats against the Palisades nuclear plant. Defense lawyer Sean Tilton said Fortuna is remorseful and wants to turn his life around.