When a gunman opened fire with an AR-15 at a large high school in south Florida, the 17 dead included students and school workers, young and old. Here is a look the 17 confirmed dead by authorities in the massacre at Marjory Stoneman Douglas High School:
COACH AND SECURITY MONITOR
Assistant football coach Aaron Feis was shot to death while selflessly shielding students from bullets. A tweet from the school football program ended: "He died a hero and he will forever be in our hearts and memories."