... The morning inside the school, when the gunfire started, Aidan said it sounded like "falling hammers."
His teacher, Ms. Soto, moved her first grade students to the other side of the room. Moments later, the gunman -- identified by authorities as 20-year-old Adam Lanza -- was in the doorway.
Soto positioned herself in front of the students, and the gunman shot her, Aidan told his parents.
Aidan and the children had always been told during school drills and by his parents to run if he saw somebody with a gun. So that's what he did.
"They ran past the guy. He standing in the doorway, and they just ran right past him," the boy's father said.
Aidan and the boys ran toward the front door, out of the building and then toward the main road where a woman stopped, picked them up and drove them to the police station.
"He loved his teacher. ...I think he's trying to reassure himself that she's going to be OK," Aidan's mother said. "He keeps saying 'I really hope she is OK. He knows that that she's been hurt. He knows the kids he saw getting shot." ...