the always outspoken chris kluhy's first interview since leaving the nfl. >>> we begin tonight with cold that can kill in minutes. a freeze for big parts of the country. shipping traffic is caught in the ice in detroit and schools are closed. traditionally cold places are warm, because the weather pattern makes winter cold. they couldn't stay put. >> icy cold temperatures gripping the united states. the coldest in nearly 20 years. the cause a weather phenomenon known as a polar vortex. it makes temperatures plummet to record lows where you least expect it. today it was warmer in arrange rajs, alaska than in atlanta, georgia or nashville, tennessee. it hovered around double-digits but it felt like 40 below zero. it's not only one for the record books, but the zero degree chill is downright dangerous. >> about 10 to 15 minutes we're looking at a potential for frostbite. it's extremely dangerous, and we don't want to put them in that situation. >> the cold temperatures forced the closing of schools. affecting more than 840,000 students. cities throughout the nation are making plans to bring

the always outspoken chris kluhy's first interview since leaving the nfl. >>> we begin tonight with coldminutes.