ProPublica, The Texas Tribune and FRONTLINE

Active shooter training: State-specific requirements for schools and law enforcement

No states mandate annual active shooter training for police officers, according to an analysis. In comparison, at least 37 states require such training in schools, typically on a yearly basis.

Why we’re publishing never-reported details of the Uvalde school shooting before state investigators

When mass shootings devastate communities, investigators often set out to learn what happened by interviewing a wide array of people. What’s made public, if anything, rarely details the intimate, candid and emotional responses of the survivors and the first responders.