Hal Dane had the hard-earned knowledge of the Wrights, and of a hundred other inventors to help guide him to air truths. Yet, for all that, his planes were both so radically new in type that "bugs" all their own had developed and had to be patiently weeded out. But ambition drove young Dane harder than any whips could have driven him. There were periods when he bent over his drafting table thirty-six hours at a stretch. The personnel of the Wiljohn Airlines caught the spirit of his vast ambition, and during months of construction, the organization labored as it never had before. Day and night, seven days a week, the work went forward. Out of cloth, wood, and a few lengths of steel tubing grew two structures that differed enormously. The gyroscope idea was developing into a squat, square-looking, heavy-set plane; while the Wind Bird with its streamlined body and vast wing stretch seemed to spell speed, speed!