Sheila Mikhail did everything right. She stayed healthy, saw her doctor regularly, and got her annual mammograms at Duke Cancer Center. Despite all of it, her breast cancer went undetected for seven years. The culprit: dense breast tissue, a common condition that can cause mammograms to miss up to half of all tumors. Now cancer-free, Sheila is on a mission to ensure all North Carolinians have access to the screening that could have caught her cancer years earlier. Having built a billion-dollar biotech company, she joins the Holler to share how she turned personal tragedy into a political fight...