November 13, 2015 5:40 pm San Francisco on Heightened Alert After Paris Attacks, Police Chief Says San Francisco Police Chief Greg Suhr said the city is on heightened alert because of the series of attacks that thrust Paris into chaos on Friday. 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