when store owner albert abbas views the footage captured by his security cameras later that morning, he's blown away. >> when it first happened, i couldn't believe it. i mean, to hear them tell me the story was one thing, but then to actually see it on video was a whole other ball game. it was absolutely ridiculous. >>> coming up -- a snowboarder tries to outrun an avalanche. >> he went from riding as high as you can be to instant fear. >>> and a daredevil on a snowmobile goes tumbling. >> it was like losing my brother right in front of my eyes. >>> a snowboarder takes off. >>> a snowboarder takes off. >> i just knew that the mountain was coming down. >> go, go, go, go, go! >> and must outrun an avalanche for survival. summit county, colorado. the mack family lives here amid the rocky mountains. >> we love the mountains. our whole family. we sure get out and explore it in it the winter. >> we live and breathe the mountness. some people like the oceans, we like the mountains. >> for the macks, nothing is better than venturing into colorado back country and riding on fresh powder. >> j

when store owner albert abbas views the footage captured by his security cameras later that morning,blown away. >> when it first happened, i couldn't believe it. i mean, to hear them tell me the story was one thing, but then to actually see it on video was a whole other ball game. it was absolutely ridiculous. >>> coming up -- a snowboarder tries to outrun an avalanche. >> he went from riding as high as you can be to instant fear. >>> and a daredevil on a snow mobile goes tumbling. >> it was like losing my brother right in front of my eyes. [ male announcer ] it's that time of year again. time for citi price rewind. because your daughter really wants that pink castle thing. and you really don't want to pay more than you have to. only citi price rewind automatically searches for the lowest price. and if it finds one, you get refunded the difference. just use your citi card and register your purchase online. have a super sparkly day! ok. [ male announcer ] now all you need is a magic carriage. citi price rewind. start saving at citi.com/pricerewind. >>> a snowboarder takes off. >> i ju