Shooting at Nashville elementary school kills three children and three adults; Mississippi residents fear tornado recovery could take years; Israeli prime minister puts plan to overhaul judiciary on hold after protests; and more on tonight’s broadcast.

Six people, including three children, were killed in a shooting at a school in Nashville, Tennessee, officials say, and the shooter was killed by police. Lester Holt anchors an NBC News Special Report with what we know as authorities give an update.