Ronald Mockelman was sentenced Tuesday in U.S. District Court in Lincoln. He’d pleaded guilty to assault on a federal officer.
Authorities say the marshal was struck in the chest and face while transporting Mockelman on Dec. 13, 2017. He’d been arrested for violating terms of his supervised release in a 2015 case.
Mockelman was sentenced in 2015 for leaving threatening messages for U.S. Department of Transportation workers. He was upset about a nearly $3,700 fine levied because he didn’t have a drug-testing program at his shop near Valley where he was the only worker.