School violence

FILE — This Jan. 17, 1966, file photo, shows part of the wreckage of the USAF B52 that crashed in Palomares, Spain, after a mid-air collision with a KC 135 aerial tanker during refueling. A federal appeals court heard arguments Wednesday, Sept. 2, 2020, but did not issue a ruling, on whether there were flaws in data used by U.S. officials to deny benefits to veterans who say they became ill from radiation exposure while responding to a 1966 accident involving American hydrogen bombs in Spain. Yale Law School students are representing veterans in a class-action lawsuit. (AP Photo, File)

FILE - In this Jan. 28, 2013, file photo, firearms training unit Detective Barbara J. Mattson, of the Connecticut State Police, holds up a Bushmaster AR-15 rifle made by Remington Arms, the same make and model of the gun used by Adam Lanza in the December 2012 Sandy Hook School shooting, during a hearing of a legislative subcommittee in Hartford, Conn. On Tuesday, Aug. 18, 2020, a lawyer for some of the Sandy Hook school shooting victims accused Remington Arms of using its new bankruptcy case to try to wipe out the families' lawsuit against the company over how it marketed the rifle used in the massacre. (AP Photo/Jessica Hill, File)

FILE- In this Oct. 21, 2019 file photo, former Broward County Sheriff Scott Israel appears before the Senate Rules Committee concerning his dismissal by Gov. Ron DeSantis, in Tallahassee, Fla. Israel is running against Sheriff Gregory Tony in the upcoming Florida primary. (AP Photo/Steve Cannon, File)

This booking photo provided by Martin County Sheriff’s Office shows Donald Williams. Authorities say a Florida woman was fatally shot Tuesday, Aug. 11, 2020, by her ex-boyfriend as her daughter started her first day of online school. Williams has been charged with first-degree murder in the death of Maribel Rosado Morales, 32. Investigators said Williams shot the woman multiple times at her Indiantown home in front of her four children and their two cousins.(Martin County Sheriff’s Office via AP)

Lisa Fitzgerald O'Connor poses for photographs at M.S. 324 Thursday, Aug. 6, 2020, in New York. It has been seven years since the central air conditioning system worked at the New York City middle school where O’Connor teaches. As a new school year approaches amid the coronavirus pandemic, she and her colleagues are threatening not to return unless it's repaired. (AP Photo/Frank Franklin II)

FILE - In this Dec. 10, 2019 Nikolas Cruz appears at a hearing in Fort Lauderdale Fla. The death penalty trial of Cruz, the man charged with killing 17 people at a Florida high school is off indefinitely because of restrictions related to the coronavirus. Broward Circuit Judge Elizabeth Scherer said Monday, June 22, 2020, in a hearing held remotely that it's not even clear when the courthouse will reopen to the public. It's been closed since March 16. Cruz is charged with fatally shooting 17 people and wounding 17 others at Marjory Stoneman Douglas High School on Valentine's Day 2018. (Amy Beth Bennett/South Florida Sun-Sentinel via AP, Pool)

FILE - In this May 8, 2019, file photo, a Douglas County, Colo., Sheriff's deputy walks past the doors of the STEM Highlands Ranch school in Highlands Ranch, Colo. The younger of two students charged in the shooting at the suburban Denver school in the spring of 2019 is scheduled to be sentenced Friday, July 24, 2020. The decision will come after a hearing in which those impacted by the shooting, including the parents of a student who died trying to stop the attack at STEM School Highlands Ranch, will speak. (AP Photo/David Zalubowski, File)