Matt Giblin puts booties on leader Kenya before leaving the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Associated Press
Matt Giblin puts booties on leader Kenya before leaving the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)
Matt Giblin puts booties on leader Kenya before leaving the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)
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