Crime scene tape surrounds Robb Elementary School in Uvalde, Texas, Wednesday, May 25, 2022. Desperation turned to heart-wrenching sorrow for families of grade schoolers killed after an 18-year-old gunman barricaded himself in their Texas classroom and began shooting, killing at least 19 fourth-graders and their two teachers. (AP Photo/Jae C. Hong)
For the wounded children and teachers inside Rooms 111 and 112, help was a few feet away for more than an hour. Videos show a…