Prosecutors said in a news release that 67-year-old Larry Russell Dawson of Antioch, Tennessee, was sentenced Monday in federal court in Washington. He has been ordered to receive mental health treatment.
Dawson had previously pleaded to a charge of assaulting, resisting, or impeding officers while using a deadly or dangerous weapon.
An officer shot Dawson on March 28, 2016, after he pulled out a BB gun that looked like a handgun at the checkpoint.