creatures, leans just that little bit too far, and takes a dive into the enclosure. he lies still, passed out on the ground. >> met up with pete and he told me a child had fallen into the gorilla pit. >> the gorilla has got her. >> a gargantuan gorilla is hovering over the boy. >> that's when things started getting hectic. >> one mother can't stand the suspense. >> at first, i didn't want to look. i didn't want to know. i didn't want to see what i was about to see. >> where? >> over down the gorilla cage. >> they're like the gorilla has the boy, the gorilla has the boy. that's when i peered over and saw the gorilla. >> oh, my god. >> helpless, paralyzed with fear, people gather by the rail. >> you felt like it was your child. you wanted to be able help him. you wanted to get him away from the gorillas. >> the other gorillas were circling around, making these weird noises when it happened. >> we heard i call it screeching