Eureka, Alaska, musher Brent Sass heads up the Yukon River as he leaves Dawson City, Yukon, on Thursday morning, Feb. 6, 2014, for the second half of the Yukon Quest. Sass is nearly an hour and a half ahead of second place musher Allen Moore of Two Rivers, Alaska. Marcel Vander Wier/Whitehorse Star
Musher Brent Sass is placed onto a plane on a stretcher Sunday afternoon in Braeburn. The 34-year-old suffered a head injury in a fall on the Yukon Quest trail from Carmacks to Braeburn. Sass is reportedly in stable condition and was airlifted to Whitehorse.
Brent Sass of Eureka, Alaska, waves to the crowd as he gets ready to leave the starting line of the Yukon Quest International Sled Dog Race on Saturday, Feb. 1, 2014, in downtown Fairbanks, Alaska. (AP Photo/ The Daily News-Miner, Sam Harrel)