Parkland school shooting 4 years later: Remembering the 17 victims

Seventeen students and staff were killed in the February 2018 Stoneman Douglas massacre.

A 15-year-old Army Junior Reserve Officer Training Corps cadet who dreamed of attending West Point but died helping classmates escape. A precocious 16-year-old girl ready to head to college and "change the world." And a high school football coach who ran toward the sound of gunfire, trying to shield students.

They were among the 17 students and staff shot dead at Marjory Stoneman Douglas High School on Feb. 14, 2018.

Four years after a school shooting that shook the nation, here is a look back at the lives lost in the Parkland, Florida, massacre.