Building a Network of Supportive Peers

Frank DeAngelis, center, greets well-wishers during a vigil at the memorial for victims of the massacre at Columbine High School more than 20 years earlier in Littleton, Colo. on Friday, April 19, 2019. DeAngelis was principal of the school at the time of the attack. The school district is considering razing the current building and putting up a new structure.

David Zalubowski/AP