Transcript for Heroes Emerge Amid Sandy Hook Elementary Shootings
As we just heard from brian this could have been so much worse. There's so many heroes emerging from the teemps to the first responders. Lara, you have met with a lot of them. I have. We're hearing about the unimaginable courage that went on inside the school on friday. All in an effort to protect those children. The incredible instincts that led to sacrifice and survival. A clear picture has emerged of the heroes of sandy hook schools. Is there any way to know how many lives she saved? You know, I don't know racketly. I heard 14. Reporter: Like that 27-year-old first grade teacher, vicki soto, who lost her own protecting students by locking them in the closet and telling the shooter they were in the other side of the building. Does it surprise you she was found huddled over the kids? No. Absolutely not. Reporter: Dawn hochsprung and mary sherlach were killed after confronting the gunman. They responded in the way we all hope we might respond. Rter: Alyssa stone was a dear friend of rachel davino. Now lisa has the painful task of burying a friend. She was brave and confident and would be the first person to get in someone's face. Reporter: You think she got in his face? I would assume so. If she was -- she was a mother tiger defending her cubs, i would picture her acting like that. Reporter: No story perhaps is more poignant than the little 6-year-old girl who was the only survivor in her class of 15 students. Her pastor tells her story. She being such an intelligent little girl, somehow in that moment, by god's grace, was able to act as if she was already deceased. So that the gunman wouldn't target her. So she laid there pretending she
This transcript has been automatically generated and may not be 100% accurate.