Vice President Kamala Harris on Saturday spoke at Marjory Stoneman Douglas High School in Parkland, Fla., about gun safety measures after meeting with families whose loved ones were killed during the 2018 shooting at the school. Joe Raedle/Getty Images hide caption
The memorial at Marjory Stoneman Douglas High School in Parkland, Fla., on Feb. 14, 2023. Five years earlier, 14 students and 3 staff members were killed in a mass shooting at the school. Saul Martinez/Getty Images hide caption
Marjory Stoneman Douglas High School shooter Nikolas Cruz is escorted into the courtroom for a hearing regarding possible jury misconduct during deliberations in the penalty phase of his trial on Oct. 14, 2022, in Fort Lauderdale, Fla. Amy Beth Bennett/AP hide caption
Marjory Stoneman Douglas High School shooter Nikolas Cruz reacts at his trial in Fort Lauderdale, Fla., on Thursday. Amy Beth Bennett/South Florida Sun-Sentinel via AP, Pool hide caption
Marjory Stoneman Douglas High School shooter Nikolas Cruz tugs at his shirt collar at the defense table for the verdict in his trial at the Broward County Courthouse on Thursday in Fort Lauderdale, Fla. The jury recommended Cruz receive a life sentence. Amy Beth Bennett/Getty Images hide caption
A memorial to the victims is seen outside Marjory Stoneman Douglas High School in Parkland, Fla., on Feb. 14, 2019, during the one-year anniversary of the school shooting. Al Diaz/Miami Herald via AP, File hide caption
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
The Montalto and Hoyer families hold hands inside the Broward County Courthouse in Fort Lauderdale, Fla., on Wednesday, Oct. 20, 2021, during Marjory Stoneman Douglas High School shooter Nikolas Cruz's guilty plea in the 2018 shootings. The Montalto's daughter, Gina Montalto, 14, and the Hoyer's son, Luke Hoyer, 15, were both killed in the massacre. Amy Beth Bennett/AP hide caption
Mourners visit a makeshift memorial outside Marjory Stoneman Douglas High School in Parkland, Fla., on Feb. 14, 2020, during the two-year anniversary of the Parkland shooting that killed 17 people and injured another 17. Matias J. Ocner/Miami Herald/Tribune News Service/Getty Images hide caption
A Broward County Sheriff's Office vehicle is parked outside Marjory Stoneman Douglas High School, in Parkland, Fla. Wilfredo Lee/AP hide caption
In this 2015 photo, then-school resource officer Scot Peterson spoke at a school board meeting of Broward County in Florida. Peterson was arrested on Tuesday and faces 11 charges in the wake of the Marjory Stoneman Douglas High School shooting. Broward County Public Schools via/AP hide caption
Nikolas Cruz speaks to public defender Diane Cuddihy, right, during a hearing in March. Taimy Alvarez/AP hide caption
Rep. Eric Swalwell, D-Calif., speaks to a group in Iowa City, Iowa, in February. Swalwell, who became the latest Democrat to run for president, was born in Iowa but grew up in California. Scott Olson/Getty Images hide caption
Sherrie Lawson struggled with PTSD, depression and anxiety after she survived the Washington Navy Yard shooting. Courtesy of Sherrie Lawson hide caption
Thousands of people participate in the March for Our Lives protest in New York City in March 2018. Spencer Platt/Getty Images hide caption
After his company's response to the Parkland shooting, Dick's Sporting Goods CEO Ed Stack became an unlikely corporate face of gun control. Scott Dalton/Invision for DICK'S Sporting Goods/AP Images hide caption
Maya Altman and her mother, Robyn Altman, visit StoryCorps in Parkland, Fla., to reflect on the mass shooting at Marjory Stoneman Douglas High School. Madison Mullen/StoryCorps hide caption
Rep. Matt Gaetz, R-Fla., a member of the House Judiciary Committee, injected the immigration debate into a hearing on gun violence prevention. Jose Luis Magana/AP hide caption
A report released on Wednesday concluded that a series of security breaches and law enforcement failures allowed an active shooter to kill 17 students and faculty. Wilfredo Lee/AP hide caption
People gather to protest Brett Kavanaugh on the day that he and Christine Blasey Ford testified on Capitol Hill in September. The Washington Post/Getty Images hide caption
Broward County Public Schools Superintendent Robert Runcie (center) speaks to media in February in Parkland, Fla., the day after the shooting at Marjory Stoneman Douglas High School. He is flanked by Broward County Sheriff Scott Israel (left) and Florida Gov. Rick Scott (right). Mark Wilson/Getty Images hide caption
"If you do say, 'Yes, my child has seen a counselor or a therapist or a psychologist,' what does the school then do with that?" asks Laura Goodhue, who has a 9-year-old son on the autism spectrum and a 10-year-old son who has seen a psychologist. Andrea D'Aquino for NPR hide caption
An agent from the Bureau of Alcohol, Tobacco and Firearms trains a sniffer dog at its facility in Front Royal, Va. Brian Naylor/NPR hide caption