QUEENSTOWN, NEW ZEALAND - AUGUST 25: Tyler Walker of the United States competes in the Men Giant Slalom Sitting LW12-1 in the IPC Alpine Adaptive Giant Slalom Southern Hemisphere Cup during the Winter Games NZ at Coronet Peak on August 25, 2015 in Queenstown, New Zealand. (Photo by Hannah Peters/Getty Images)

QUEENSTOWN, NEW ZEALAND - AUGUST 25:  Tyler Walker of the United States competes in the Men Giant Slalom Sitting LW12-1 in the IPC Alpine Adaptive Giant Slalom Southern Hemisphere Cup during the Winter Games NZ at Coronet Peak on August 25, 2015 in Queenstown, New Zealand.  (Photo by Hannah Peters/Getty Images)