This long and narrow building was an aircrew training facility that contained a number of mechanical flight simulation devices called Link Trainers. These pilot training machines, first developed by Edwin Link in the late 1920s, consisted of a stylized, miniature airplane—complete with a cockpit, little wings and a tail, with usable flight controls—mounted on a pedestal that enabled it to move about, simulating in-flight behavior. The system used mechanisms derived from Link’s player piano and organ business. During the war, thousands of Link Trainers were in use by the Army Air Corps, to teach pilots proper instrument flight procedures.