On the morning of Friday, March 22, 2002, a workplace shooting at Bertrand Products in South Bend, Indiana, left four employees dead, including 47-year-old John Contadeluci. The gunman, a fellow employee identified as 54-year-old William Lockey, also killed Craig Schafer, 50, Dave Arpasi, 73, and Robert Downs Jr., 42; two other employees were wounded.

After the attack Lockey stole a company van and led police on a high-speed chase that crossed into Michigan. He fired at officers during the pursuit; officers returned fire. As the chase neared a police roadblock outside Niles, Lockey shot himself. The van then left the road, hit mailboxes and a tree, and Lockey was found dead inside. Three officers were injured by flying debris and shotgun pellets during the incident.

Did anyone who worked at Bertrand Products or lived along the chase route notice unusual behavior from Lockey or other signs before March 22, 2002?