Two separate incidents involving police officers occurred in Massachusetts this week. In Worcester, a police officer was pinned between his cruiser and another car while responding to a fight, after forgetting to put his vehicle in park. Nearby men helped free the officer, who was uninjured. In Burlington, retired Sgt. Timothy Kirchner, now a reserve officer, was seriously injured when a 2016 Chevrolet Equinox driven by a 75-year-old man jumped the curb and struck him while he was working a construction detail. Kirchner was taken to Lahey Hospital with serious arm, elbow, and leg injuries, while the driver remained at the scene and cooperated with authorities. Both incidents are under investigation by local and state police.