On February 21, 2015, 51-year-old Kent Norman died after a confrontation with Indianapolis police at the home he shared with his parents. A 911 call from the residence captured screams and shouting; officers broke a window to enter when the front door was locked. Inside the kitchen, Norman was holding his 74-year-old mother, Mary Jane, with a butcher knife to her neck and his 78-year-old father had been injured in the altercation.

Officers ordered Norman to drop the weapon; he refused and was shot in the chest. He died almost instantly at the scene. Family members said Norman had a history of mental illness, that his depression had worsened in the weeks before the shooting, and that he had been drinking that day. The police department and prosecutor’s office later cleared the officers, and Norman’s parents met with the officers to express gratitude for saving their lives.

What details might help explain how the situation escalated so quickly and what led to the 911 call?