There came a sudden change in the behavior of the plane. Instead of straight flying, Maben began to put it through an intricate series of stunts. He went into nose spins, tail spins, falling leaves, and loop the loops. It was a breath-taking exhibit, at times seemingly reckless beyond all warrant. Yet there was never a slip nor careen to the ship. For perhaps half an hour this continued, then the plane straightened out in a long graceful glide.