Naomi Alexis joins Janet Hays to open up about the signs and dangers of untreated mental illness. Alexis’ brother, Aaron Alexis, shot and killed 13 people including himself at a Navy Yard in Washington, D.C. in 2013. In the interview, Alexis discusses how the mental health stigma and failed policy efforts contribute to undiagnosed illnesses and severe violence. Listen to the full segment below.