Texas Department of Public Safety Director Steve McCraw uses photos of doors to present what happened regarding the keys and doors during the school shooting at Robb Elementary School in Uvalde, Texas to the Texas Senate Special Committee to Protect All Texans during the hearing at the Texas State Capitol in Austin, Tuesday, June 21, 2022. (Sara Diggins/Austin American-Statesman via AP)
Heather Hollingsworth Associated Press The Uvalde massacre began after the 18-year-old gunman entered the school through a door that could only be locked from the…