Question Mark (aircraft) Question Mark (aircraft) Question Mark (""?"") was a modified Atlantic-Fokker C-2A transport airplane of the United States Army Air Corps. In 1929, commanded by Major Carl A. Spaatz, it was flown for a flight endurance record as part of an experiment with aerial refueling. "Question Mark" established new world records in aviation for sustained flight (heavier-than-air), refueled flight, sustained flight (lighter-than-air), and distance between January 1 and January 7, 1929, in a non-stop flight of more than 150 hours near Los Angeles, California. Following the record-setting demonstration, the C-2A was returned to transport duties. In 1931 more powerful engines replaced
History of the US Army National Guard separate from the United States Army, of which it had been part since before World War I. As a result of the Air Force's creation, the Air National Guard was formed. Under the control of the governors during peacetime, the Air Guard was organized along the same lines as the Army National Guard, as both a militia existing in each of the states, and as a federal reserve component of the US Air Force. The fielding of the Air National Guard also caused the creation of two new positions within the National Guard Bureau, the Director of the Army National