The Challenge XXX: Dirty 30 is a season of an American TV show.
Captain Malcolm Charles McGregor -LRB- 4 March 1896 -- 19 February 1936 -RRB- was a New Zealand born World War I flying ace .. flying ace. flying ace. He was credited with 11 victories during the war .. Postwar , he was an aviation pioneer in his home country and a competitor in intercontinental air racing .