With wildly waving arms Chick tried to attract Garry’s attention.

The young amateur, busy watching his controls, the steadying of his ship, planning his next course, did not at once see Chick’s movement.

Chick reaching forward, caught the detonating mechanism of the Verey pistol, which he knew Don had told him to load after their last signal.

Chick fired the green Verey light.

That made Garry turn his head.

With the pilots’ code, arm movements, Chick beckoned to Garry, as he saw the youth turn his head that way: quickly, then, Chick held an arm straight out in front of him. Rapidly he repeated the gestures.

As he began again to beckon, Garry, catching his idea, revved up, his ship came on, level-keeled and swift, just as the mail ship began to come forward, itself on a power-glide of an angle to bring it close to the helicopter.

But Garry, coming fast, saw the value of Chick’s signal.

Full-gun, he used every ounce of power, every hope of his earnest young championship for Don and Chick, to send that craft of his into place in time.

The mail ship’s control man saw that if he continued to come at the helicopter he must come also into a line of flight that would intersect that of the Dragonfly.