Mr. Nishimura was born in Seattle, Washington, and moved to Japan to live with his grandparents in Hiroshima when he was nine years old. In 1943 he was drafted into the Imperial Japanese Navy while holding dual Japanese and American citizenship. He was assigned as an ensign to the Kamikaze Tokko Kai for the defense of Okinawa when the war ended. After the war he established an import/export business.