sentences:  On 20 October 1922, Lieutenant Harold R. Harris, chief of the McCook Field Flying Station, jumped from a disabled Loening PW-2A high wing monoplane fighter.Harris' lifesaving chute was mounted on the wall of McCook's parachute lab where the "Dayton Herald's" aviation editor Maurice Hutton and photographer Verne Timmerman, predicting more jumps in future, suggested that a club should be formed.Two years later, Irvin's company instituted the Caterpillar Club, awarding a gold pin to pilots who successfully bailed out of disabled aircraft using an Irving parachute.