On August 31, 1921, a surplus World War I Curtiss JN-6H (Jenny), piloted by Lt. John A. Macready, took off from McCook Field near Dayton, Ohio to attack a new enemy – the Catalpa sphinx moth. To the cheers of an enthusiastic group of spectators, Macready dumped a load of powered lead arsenate from a makeshift metal hopper attached to the Jenny's fuselage onto an orchard being defoliated by the insects. A subsequent inspection soon revealed that the pesky moths had been virtually wiped out by the aerial assault and a new practical application for the airplane was born—crop dusting.