October 2, 2017 5:40 pm How Law Enforcement Prepares for Mass Shootings NBC 7 guest Sheriff Bill Gore shares how law enforcement prepares for mass events like the Mandalay Bay active shooter. 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