Justin Savidis dogs await lineup in the musher lot before the official restart of the Iditarod dog sled race in Willow, Alaska, March 2, 2014. The nearly 1,000-mile (1,600-km) Iditarod Trail Sled Dog Race commemorates a 1925 rescue mission that carried diphtheria serum by sled-dog relay to the coastal community of Nome, which remains the final destination in this 42nd edition of the event. (Photo by Nathaniel Wilder/Reuters)
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