Authorities tonight are crediting a father of two who happened to be driving by the school on his lunch break when he heard gun shots, along with a teacher who threw a cell phone and tackled the gunman, for saving lives. NBC News’ Liz Kreutz reports.
Source: [NBC News](https://www.nbcnews.com/nightly-news/video/father-of-two-and-teacher-credited-for-saving-lives-at-deadly-school-shooting-that-killed-four-271725125719)