Patrolman John Joseph Kerr, 32, of the Union City Police Department in Pennsylvania, was shot and killed on January 14, 1990, while on duty. Despite being critically wounded, Officer Kerr returned fire and killed the gunman before collapsing.

Officer Kerr is survived by his wife, three daughters, three stepsons and one stepdaughter.

Did anyone in the community know Officer Kerr or have information about the incident on January 14, 1990?