March 13, 2018 6:45 pm Cost Breakdown of Border Wall Prototype Security NBC 7’s Mari Payton has a deeper look at how much security efforts around the border wall prototype has cost the city and county of San Diego. 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