That afternoon when Hal and Maben went up in the plane, the dummy man went with them, scrouged down out of sight in the cockpit. Low over the houses and trees flew Maben, with Hal out on a wing tip doing all the stunts he knew. With that air balance that seemed born in him, Hal bowed and whirled on the lower wing, did acrobatics between struts, climbed to the top wing, stood outlined against the sky in daring silhouette. From his swift-moving aerial stage, the boy shouted down for the crowd to gather at the river bank--last stunt to be pulled there--a thriller!