Douglas Thornburg Gets Wings Monday At Randolph FieldHdqs., 'Gulf Coast Training Center. March 19 -Unde Sam’s gigantic Air Corps military pilot hopper. headquarters at Randolph Field, Monday, with intensifying regularity ground out its third wartime class of flying officers and first class of staff sergeant-pilots from • four Gulf Coast Ad-j vanced Schools, which included Douglas Thornburg of Casa j Grande. Arizona.Fighter-flier experts all, these men—who will end what began at Pearl Harbor on December 7 — were given the final stamp of military approval at the three oldest and one of the newest of the Gulf Coast advanced pilot training schools:Brooks and JCelly Fields, near San Antonio, single-engine schools which have seen service in two wars; Ellington. Field, near Houston, built on th» site of World War I, Ellington Field—incubator of twin-engined bombardment pilots; and' Foster Field, near Victoria, a pursuit pilot training school, mushroomed in oil rich Tex-as farm land, end dedicated only last month.