James Crumbley trial: Asst. principal learns of shooting

Kristy Gibson-Marshall worked as an assistant principal for Oxford High School when the shooting took place. Gibson-Marshall was the first adult to interact with the shooter. She also was the first to identify one of the shooting victims, and she also recognized the school shooter.

Oakland County forensics officer discusses shooting

Robert Koteles, a forensics officer with the Oakland County Sheriff's Office, takes the stand to discuss details of where the shooting occurred at Oxford High School and evidence he collected in the incident on day two of James Crumbley's involuntary manslaughter trial.