January 2, 2014 6:32 am SDSU Grad's DUI Checkpoint App Gains Popularity Before hitting the road New Year’s Eve, about 10,000 people downloaded the app “Mr. Checkpoint.” The app alerts its subscribers about DUI checkpoint locations. NBC7’s Dave Summers reports. 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
