Louisville Bank Shooting: Family and Police Response Updates.

The family of Connor Sturgeon, who killed five co-workers at a Louisville bank, is having him tested for Chronic Traumatic Encephalopathy (CTE), a degenerative brain disease caused by repeated head trauma. Sturgeon played basketball in high school and wore a helmet due to multiple concussions. While there were no warning signs of his capability to commit a mass shooting, his family said he had mental health challenges. CTE has been linked to cognitive, behavioral, mood, and motor changes, including suicidal thoughts, impulsive behavior, and memory loss. A CTE diagnosis typically cannot be made when a person is alive.