When Michael Brandon Hill carried a gun and almost 500 rounds of ammunition into a Georgia elementary school on Monday, he came face to face with Antoinette Tuff, the bookkeeper who saved hundreds of students' lives. Since then, Tuff has shared her incredible experience, detailing how, exactly, she was able to talk Hill down after the 20-year-old man said he "didn't have any reason to live" and planned to kill as many people as possible.

Tuff says that as he moved toward the children's location, she did whatever she could to make sure he didn't leave. "I called him back and kept talking to him to keep him calm, to stay inside with me," she said, adding, "He said that no one loved him, and I told him that I loved him and that it was going to be OK, that we were going to get out safely." Find out how she managed to connect with Hill and helped to avert a school shooting by watching her unbelievable testimony above.