Flores Elementary School is pictured in Uvalde, Texas, on Aug. 21, 2022. - Kat Caulderwood/ABC News(UVALDE, Texas) -- When gunfire broke out at Robb Elementary School in Uvalde, teacher Elsa Avila said her fourth graders followed lockdown protocols. "I slammed my door. I turned off the lights, and I told the kids, 'Let's move, let's