Mary Ann will be competing in her first Olympics in London . The year - old will be youngest member of the U.S. Olympic Swimming Team . Was inspired by exploits of Olympic legend Jim Thorpe , also a Native American . While she has a long way to go to match Thorpe 's Olympic achievements , Killman is already making her name in a sport where the required elegance and good timing in the pool is forged by a grueling training regime of up to 60 hours per week . She is a proud member of the Citizen Potawatomi Nation .
Mary Ann will be competing in her first Olympics in London . The year - old will be youngest member of the U.S. Olympic Swimming Team . Was inspired by exploits of Olympic legend Jim Thorpe , also a Native American . She is a proud member of the Citizen Potawatomi Nation .