NBC August 6, 2019 4:25 pm New Part of the Lesson Plan: Active Shooter Drills in Preschools With the increasing number of mass shootings, preschools are starting to incorporate active shooter drills into their disaster training. NBC 7’s Rory Devine has the story. US & World Videos 0:28 A Vermont state trooper plunges into icy pond to rescue 8-year-old girl 2:59 Keep these travel etiquette tips in mind this holiday season 2:20 Bodies of Missing Men Found in Rubber Bins Inside Storage Unit 1:42 Hundreds of Golden Retrievers Walk a Mile for the Official Boston Marathon Dog 1:51 Typewriter Shop Owner Receives Gift From Tom Hanks