The Defense Advanced Research Projects Agency, DARPA,\xa0has launched a\xa0new challenge competition with help from some of the top artificial intelligence companies. It\u2019s aimed at using AI to find and fix software\xa0weaknesses in critical networks. White House officials hope it will showcase something good about AI. Federal News Network\u2019s Justin Doubleday has more.\nLearn more about your ad choices. Visit podcastchoices.com/adchoices