WATCH: America Strong: Firefighters across the country fighting thru the deep freeze

WATCH: America Strong: Firefighters across the country fighting thru the deep freeze

Transcript for America Strong: Firefighters across the country fighting thru the deep freeze

Finally tonight here, the firefighters out in this cold, America strong. They are the brave men and women across this country tonight battling fires in the brutal cold. From Pennsylvania to Chicago to St. Paul, Minnesota, the wind chill there, 52 below. And from Cameron, Wisconsin, tonight, the image that got our attention. Chief Mitch Hansen, his mustache, his beard, covered in ice, his helmet, his uniform, frozen. He and his team putting out this house fire, and we talked to him today. He described the wind chills of 50 below. Funny thing is, sometimes your eyelids are froze shut and in weird positions and I couldn’t get my gloves off, because they were froze onto my turnout gear. So, I had to have him push my eyebrow up so I could see out of the one eye. Reporter: And what keeps him going and all of those firefighters out in this cold? The call to duty, I guess. I don’t know how to explain it as much. The heat of the moment keeps you warm while you’re doing it. Reporter: It’s only when it’s over do they realize the conditions. And most importantly, that family is okay tonight. The dad and his two children got out alive. And tonight, chief Hansen is now dry and warm and ready for the next call. Well, we salute captain Hansen and all of our firefighters. I’m David Muir. Good night. Goodht. So you finally got Fios, huh?

This transcript has been automatically generated and may not be 100% accurate.

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