Younger brother of Bode Miller found dead in Calif.
"Chelone Miller was an aspiring elite athlete who had made great progress as a snowboardcross rider this past season. We are all deeply saddened at the news of his death and extend our condolences to the entire Miller family," Bill Marolt, USSA president and CEO said.
According to USSA, Miller was in a motorcycle accident in 2005 that put him in a coma for 11 days. He returned to competitive snowboarding in 2010, and had been working to qualify for the 2014 Olympic Winter Games in Sochi, Russia in snowboardcross. In March he won the Rahlves Banzai Tour overall title in Sugar, CA.