The first day of testimony in the trial of a former police officer accused of failing to protect students who died in the Uvalde, Texas, elementary school massacre turned emotional right away. Families whose loved ones died sobbed in court Tuesday while listening to frantic 911 calls as the horror unfolded on the recordings. A special prosecutor told jurors that the former Uvalde schools officer arrived while the teenage gunman was still outside the building but did nothing until it was too late. Adrian Gonzales is one of two former officers charged following the attack that killed 19 students and two teachers. The officer’s attorney says Gonzales did what he could at a confusing and chaotic scene.