This podcast episode explores the case of Robert Card, a former army reservist who killed 18 people in a mass shooting in Maine. The investigation revealed that Card had no history of mental illness or violent behavior prior to the shooting, leaving many to wonder what could have motivated such a horrific act. Experts suggest that Card's brain damage, likely caused by repetitive blast exposure during training exercises, may have contributed to his behavior. This case highlights the need for further research on the long-term effects of blast injuries and the importance of supporting veterans struggling with mental health issues.