A blast of Arctic air gripped the vast middle of the United States with the coldest temperatures in two decades causing at least four deaths, forcing businesses and schools to close and canceling thousands of flights. <br />For more videos go to http://www.youtube.com/gujarattv9 <br />Like us on Facebook at https://www.facebook.com/gujarattv9 <br />Follow us on Twitter at https://twitter.com/Tv9Gujarat <br />Follow us on Pinterest at http://www.pinterest.com/tv9gujarat
