Unanswered questions and emotional tributes: Reflecting on the Uvalde shooting one year later.

The Hearst Television National Investigative Unit's "Securing Our Schools" series visited Robb Elementary in Uvalde, Texas, almost a year after a former student used an AR-style weapon to kill 19 students and two teachers. Chief National Investigative Correspondent Mark Albert shares his on-the-ground reporting and candid observations of a community still in mourning. The series aims to investigate school security concerns and unique district safety initiatives.