In this Saturday, March 23, 2019 photo, Columbine survivor Heather Martin reflects about the upcoming 20th anniversary of the mass shooting at her high school in suburban Denver. Martin helped found The Rebels Project, a support group for victims of mass shootings. Several survivors and family members of the Columbine victims gathered at the school’s library to speak to the media Saturday, about the 1999 attack. (AP Photo/Thomas Peipert)