WATCH: Former Robb Elementary School staffer testifies in former Uvalde CISD police officer's trial

Emilia “Amy” Franco Marin, a former staffer at Robb Elementary School, took the stand Thursday morning on the third day of ex-Uvalde CISD police officer Adrian Gonzales' trial in Corpus Christi. Per the court's discretion, Marin's face was not shown during the livestream.