Police uncover messages from the suspect that may show a motive in the Las Vegas Cybertruck explosion as his ex-girlfriend shares new video with NBC News, federal authorities warn of potential copycat attacks after the deadly New Orleans attack, a massive snowstorm set to hit the U.S., and more in tonight’s broadcast. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.