Musher Ken Anderson drives his team up the Yukon River as he 

Musher Ken Anderson drives his team up the Yukon River as he nears the Iditarod checkpoint in  Anvik, Alaska on Friday, March 8, 2013,  during the Iditarod Trail Sled Dog Race. (AP Photo/Anchorage Daily News, Bill Roth)
Associated Press
Musher Ken Anderson drives his team up the Yukon River as he nears the Iditarod checkpoint in Anvik, Alaska on Friday, March 8, 2013, during the Iditarod Trail Sled Dog Race. (AP Photo/Anchorage Daily News, Bill Roth)
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