Sam McCracken, a citizen of the Sioux and Assiniboine Tribes, at left, made a proposal to Nike in 1997 that grew into the Nike Air Native N7 shoe and retail line. He is now genera …Sam McCracken, a citizen of the Sioux and Assiniboine Tribes, at left, made a proposal to Nike in 1997 that grew into the Nike Air Native N7 shoe and retail line. He is now genera …