Heather Martin is interviewed in Aurora, Colo., on Thursday, April 11, 2024. Martin, a survivor of the 1999 shooting at Columbine High School in suburban Denver, hid with 60 other students in a barricaded office during the attack. It's been a quarter-century since two gunmen killed 12 fellow students and a teacher at the school, and the trauma of that day continues to shadow Martin and others who were there. (AP Photo/Thomas Peipert)
In this view through a fisheye lens, people visit the Columbine Memorial, Wednesday, April 17, 2024, in Littleton, Colo. Trauma still shadows the survivors of the horrific Columbine High School shooting as the attack's 25th anniversary approaches. (AP Photo/David Zalubowski)
A view of Columbine High School from rebel hill at the Columbine Memorial, Wednesday, April 17, 2024, in Littleton, Colo. Trauma still shadows the survivors of the horrific Columbine High School shooting as the attack's 25th anniversary approaches. (AP Photo/David Zalubowski)
Missy Mendo, director of community outreach for The Rebels Project, which offers support to victims of mass shootings, is shown Friday, April 12, 2024, in Denver. Trauma still shadows the survivors of the horrific Columbine High School shooting as the attack's 25th anniversary approaches. (AP Photo/David Zalubowski)
FILE - Kathy Zamora, left, comforts her friend Christine Medina, a sophomore at Columbine High School, after she escaped from the school when two gunmen entered the facility and went on a shooting rampage Tuesday, April 20, 1999, in the southwest Denver suburb of Littleton, Colo. (AP Photo/David Zalubowski, File)
The plaque to honor Daniel Mauser, one of the 12 students killed during the massacre at Columbine High School nearly 25 years ago, is displayed at the Columbine Memorial Wednesday, April 17, 2024, in Littleton, Colo. Trauma still shadows the survivors of the horrific Columbine High School shooting as the attack's 25th anniversary approaches. (AP Photo/David Zalubowski)
FILE - SWAT members run down Pierce Street while a Jefferson County, Colo., Sheriff's Department deputy peers through a fence to keep an eye on Columbine High School after a pair of gunmen went on a shooting rampage inside the facility Tuesday, April 20, 1999, in the southwest Denver suburb of Littleton, Colo. (AP Photo/David Zalubowski, File)
Clouds stream over the Columbine Memorial, Wednesday, April 17, 2024, in Littleton, Colo. Trauma still shadows the survivors of the horrific Columbine High School shooting as the attack's 25th anniversary approaches. (AP Photo/David Zalubowski)
FILE - Tape marks the line in front of the doors to the library in Columbine High School as members of the media took their first trip through the school in the southwest Denver suburb of Littleton, Colo., Tuesday, June 15, 1999, since it was the scene of the worst school shooting spree in the history of the United States on April 20. Several students were killed in the library. (AP Photo/David Zalubowski, File)
FILE - Ara Maranian, right, a junior at Columbine High School, hugs Megan Coxey, a sophomore at the school, after they were evacuated from the facility after two gunmen went on a shooting rampage Tuesday, April 20, 1999, in the southwest Denver suburb of Littleton, Colo. (AP Photo/David Zalubowski, File)
Heather Martin is interviewed in Aurora, Colo., on Thursday, April 11, 2024. Martin, a survivor of the 1999 shooting at Columbine High School in suburban Denver, hid with 60 other students in a barricaded office during the attack. It's been a quarter-century since two gunmen killed 12 fellow students and a teacher at the school, and the trauma of that day continues to shadow Martin and others who were there. (AP Photo/Thomas Peipert)
FILE - Tea lights sit illuminated during a vigil at the memorial for the victims of the massacre at Columbine High School nearly 20 years ago Friday, April 19, 2019, in Littleton, Colo. (AP Photo/David Zalubowski, File)
In this view through a fisheye lens, a plaque with a quote from President Bill Clinton is displayed on the wall of healing at the Columbine Memorial Wednesday, April 17, 2024, in Littleton, Colo. Trauma still shadows the survivors of the horrific Columbine High School shooting as the attack's 25th anniversary approaches. (AP Photo/David Zalubowski)
A rose stands at the plaque for Corey DePooter, one of the 12 student victims in the massacre at Columbine High School nearly 25 years ago, at the Columbine Memorial, Wednesday, April 17, 2024, in Littleton, Colo. Trauma still shadows the survivors of the horrific Columbine High School shooting as the attack's 25th anniversary approaches. (AP Photo/David Zalubowski)
In this photograph taken through a fisheye lens, people visit the Columbine Memorial, Wednesday, April 17, 2024, in Littleton, Colo. Trauma still shadows the survivors of the horrific Columbine High School shooting as the attack's 25th anniversary approaches. (AP Photo/David Zalubowski)
Missy Mendo, director of community outreach for The Rebels Project, which offers support to victims of mass shootings, is shown Friday, April 12, 2024, in Denver. Trauma still shadows the survivors of the horrific Columbine High School shooting as the attack's 25th anniversary approaches. (AP Photo/David Zalubowski)
A visitor looks at the plaques on the wall of healing at the Columbine Memorial, Wednesday, April 17, 2024, in Littleton, Colo. Trauma still shadows the survivors of the horrific Columbine High School shooting as the attack's 25th anniversary approaches. (AP Photo/David Zalubowski)
A visitor moves through the Columbine Memorial, Wednesday, April 17, 2024, in Littleton, Colo. Trauma still shadows the survivors of the horrific Columbine High School shooting as the attack's 25th anniversary approaches. (AP Photo/David Zalubowski)
Missy Mendo, director of community outreach for The Rebels Project, which offers support to victims of mass shootings, is shown Friday, April 12, 2024, in Denver. Trauma still shadows the survivors of the horrific Columbine High School shooting as the attack's 25th anniversary approaches. (AP Photo/David Zalubowski)