November 6, 2017 5:45 pm Why Little is Done to Research, Prevent Gun Violence NBC 7’s Megan Tevrizian reports on why it is difficult for researchers to investigate gun violence. 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