School shooting indiscriminate, killed students and staffers

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 at some of some of those who lost their lives in the massacre at Marjory Stoneman Douglas High School:

COACH AND SECURITY MONITOR

The high school football program tweeted that assistant coach Aaron Feis died while selflessly shielding students. The tweet ended: "He died a hero and he will forever be in our hearts and memories."

Feis graduated from the school in 1999 and worked mainly with the junior varsity, the team website said. It said he lived in nearby Coral Springs with his wife and daughter.