Daughter of teacher killed during Columbine shooting talks about the lives he saved

Coni Sanders says in the 20 years after her father's death in Columbine High School, she's realized how many lives he saved and how he might have been in the right place at the right time.
Published: 5:49 AM MDT April 19, 2019
Updated: 10:22 PM MDT April 19, 2019