ASPEN, CO - JANUARY 29:  Christian Mithassel (yellow) of Norway leads the pack to win the semifinal heat ahead of Casey Puckett (black) of the USA, Dave Duncan (white) of Canada, Daniel Bohnacker (red) of Germany and Alex Fiva (green) of Switzerland during Winter X Games 2012 at Buttermilk Mountain on January 29, 2012 in Aspen, Colorado. Mithassel, Puckett and Duncan advanced to the final.  (Photo by Doug Pensinger/Getty Images)
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