Investigators search for evidences outside Robb Elementary School in Uvalde, Texas on May 25, 2022. Jae C. Hong/AP hide caption

Uvalde elementary school shooting
Columbine Principal Frank DeAngelis listens to his students, survivors of the shooting, in April 2019 as he attends "Columbine 20 Years Later: A Faith-based Remembrance Service" at Waterstone Community Church in Littleton, Colo. A dozen students and one teacher were massacred by two heavily armed students. Joe Amon/AFP via Getty Images hide caption
A small, growing group of survivors advises school leaders after mass shootings
Sen. Chris Murphy of Connecticut, the lead Democratic negotiator on a bipartisan gun bill safety bill, speaks to activists protesting gun violence and demanding action from lawmakers, on June 8 near the U.S. Capitol. Nicholas Kamm/AFP via Getty Images hide caption
A young woman pays her respects at a memorial in front of Robb Elementary School earlier this monthin Uvalde, Texas. Committees have begun inviting testimony from law enforcement authorities, family members and witnesses regarding the mass shooting at Robb Elementary School which killed 19 children and two adults. Brandon Bell/Getty Images hide caption
Law enforcement personnel stand outside Robb Elementary School following a shooting on May 24 in Uvalde, Texas. When the gunman arrived at the school, he hopped its fence and easily entered through an unlocked back door, police said. Dario Lopez-Mills/AP hide caption
A sign reading "Protect Kids Not Guns" sits on a chair at a vigil for victims of recent mass shootings in Sunrise, Fla. The vigil was held by Moms Demand Action, to mourn victims of the mass shootings in Buffalo, N.Y., and Uvalde, Texas. Joe Raedle/Getty Images hide caption
A bipartisan group of senators announces a deal for school safety and gun measures
A truck passes crosses placed along the highway to honor the victims killed in the recent school shooting at Robb Elementary School. Eric Gay/AP hide caption
The creator of the FBI mass shooting protocol is 'shocked' by Uvalde police response
A child lights candles at a memorial for the victims of a May 24 mass shooting at Robb Elementary School in Uvalde, Texas, that killed 21 people, mostly children. Alex Wong/Getty Images hide caption
Poll: Support for controlling gun violence hits its highest point in a decade
Semi-automatic weapons are displayed during the National Rifle Association's annual meeting last month in Houston. Patrick T. Fallon/AFP via Getty Images hide caption
Camila Alves McConaughey holds green Converse sneakers. Uvalde, Texas, school shooting victim Maite Rodriguez, who died at age 10, was wearing green Converse shoes when she died. Susan Walsh/AP hide caption
Guests arrive at the joint funeral service for Irma Garcia and her husband, Joe Garcia, at Sacred Heart Catholic Church in Uvalde, Texas, on Wednesday. Schoolteacher Irma Garcia died in the May 24 school shooting in Uvalde, and her husband died two days later of a heart attack. Eric Gay/AP hide caption
A memorial dedicated to the victims of the mass shooting at Robb Elementary School in Uvalde, Texas. Alex Wong/Getty Images hide caption
An officer walks outside of Robb Elementary School in Uvalde, Texas, on May 25. Allison Dinner/AFP via Getty Images hide caption
President Biden and first lady Jill Biden drive past a memorial site in the town square of Uvalde set up for those killed in the school mass shooting, on their way to Robb Elementary School on Sunday in Uvalde, Texas. Wong Maye-E/AP hide caption
Cardinal Blase Cupich stands outside of the Archdiocese of Chicago Pastoral Center on Wednesday. Cupich has served as the archbishop of the Archdiocese of Chicago since 2014. Jamie Kelter Davis for NPR hide caption
Chicago archbishop adds his voice to the calls for gun safety legislation
People sit Feb. 14 in front of a photo display of the 17 people killed four years earlier during a mass shooting at Marjory Stoneman Douglas High School in Parkland, Fla. Joe Raedle/Getty Images hide caption
A teacher who was at the Parkland shooting offers advice for the Uvalde survivors
The gunman in the May 24 mass shooting at Robb Elementary in Uvalde, Texas, purchased an AR-15-style rifle from Daniel Defense online. Lisa Marie Pane/AP hide caption
Smith & Wesson M&P15 semi-automatic rifles of the AR-15 style are displayed during the National Rifle Association (NRA) annual meeting at the George R. Brown Convention Center in Houston, Texas on May 28. Patrick T. Fallon/AFP via Getty Images hide caption
President Biden speaks at the Cross Hall of the White House on Thursday about the recent mass shootings and urges Congress to pass laws to combat gun violence. Saul Loeb/AFP via Getty Images hide caption
People mourn Tuesday at a makeshift memorial for the victims of the Robb Elementary School shooting in Uvalde, Texas. The Texas town of Uvalde began on Tuesday laying to rest the 19 young children killed in an elementary school shooting that left the small, tight-knit community united in grief and anger. Chandan Khanna/AFP via Getty Images hide caption
Mourners comfort each other Wednesday during the burial service for Irma Garcia and her husband Joe Garcia at Hillcrest Cemetery in Uvalde, Texas. Irma Garcia was killed in last week's elementary school shooting. Joe Garcia died two days later. Jae C. Hong/AP hide caption