试飞员
Although the United States Armed Forces had been evaluating aircraft since Lt. Benny Foulois flew with Orville Wright in 1909, the designation of "test pilot" was not formally applied until a group of McCook Field pilots was assigned to a flight testing squadron at Wright Field during World War I. Test pilot selection was a seemingly indiscriminate process yielding a mix of experienced pilots who had volunteered for the task, flight instructors who were simply assigned to the job, and the occasional officer fresh from flying school. One of the latter, Lt. Donald Putt, who would later rise to the rank of lieutenant general, recalled: