Marianna Mitchem grew up in the Denver suburbs, where she played high school soccer. One day in April 1999, her team faced off against a nearby rival, Columbine High. The next day, two teenagers went on a shooting rampage at Columbine, killing more than a dozen people.
The massacre left an imprint on Mitchem. After graduating from Providence College, she joined the Bureau of Alcohol, Tobacco, Firearms and Explosives. “Fearing for my friends and watching what was happening — you don’t forget things like that,” she told me. “I wanted to make a difference.”
