Michael Lang, suspect charged with killing Iowa State trooper Jim Smith, pleads not guilty Philip Joens, Des Moines Register Drone video: Iowa State Patrol Sgt. Jim Smith's funeral procession Replay Video UP NEXT A Grundy Center man has pleaded not guilty to a number of charges, including first-degree murder, related to the fatal shooting of Iowa State Patrol trooper Jim Smith. Michael Lang, 41, was charged with first-degree murder, assault on a peace officer and attempted murder after allegedly shooting and killing Smith during a standoff at his home. Lang was scheduled to appear in court Monday but his attorney, Aaron Hawbaker, filed a written arraignment Sunday in Grundy County.