State of emergency as U.S. faces arctic blast

Millions of Americans are still dealing with an arctic blast moving across the country. Tonight, almost 80% of the U.S. is below freezing temperatures. The storm system is already believed to have claimed ten lives. Jesse Kirsch reports from Michigan. » Subscribe to NBC News: NBC News Digital is a collection of innovative and powerful news brands that deliver compelling, diverse and engaging news stories. NBC News Digital features , , , Nightly News, Meet the Press, Dateline, and the existing apps and digital extensions of these respective properties. We deliver the best in breaking news, live video coverage, original journalism and segments from your favorite NBC News Shows. Connect with NBC News Online! Breaking News Alerts: Visit : Find NBC News on Facebook: Follow NBC News on Twitter: Get more of NBC News delivered to your inbox: #ExtremeWeather #WinterStorm #Temperature