March 19, 2014 7:02 pm Mexican Military, Police Cross Border Often NBC 7’s Liberty Zabala takes a look at how often Mexican military troops and police officers cross the border into the U.S. via places like 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