students' screams, three construction workers who were working on the roof of the school noticed brendan o'rourke as he climbed back over the fence. o'rourke had run out of ammunition and he was heading become to his car to reload. the men were able to wrestle him to the ground after one of the workers hit the shooter with his truck. nobody at kelly elementary school ever expected something like this to happen here. >> my life won't be the same. no. i mean, i worry when i send my kid to school, you know, that something could happen. it won't be the same. our bubble was broken that day. >> i think when somebody tries to hurt kids that badly and we love these kids so much and you think that somebody tried to do that to them it's emotional. that hurts that that happens to them. i'm also very proud of them because kids are super resilient. >> peggy parish teaches kindergarten. as the school went into immediate lockdown parish ushered 15 students and three classroom help inteers a bathroom. they would stay there for the first 45 minutes of the merely four-hour lockdown. >> about 45 minutes we were all