Vinson nodded. "If any of that fore gang try maneuvering, they'll drop behind."

Vinson looked out of the pilot's window at the first few planes of the oncoming fleet. Miles away, still, and in a long, long line, he estimated that he was able to avoid and outrun all but ten or twenty of the foremost.

Plane for plane, the advantages were about equal; only in the advantage of position could Harry Vinson hope to win through. The line had come up in such a way as to permit him to run before them but at an unfavorable angle. It was a strange formation; the single, fleeing quarry running almost parallel to a line miles long, a line playing follow-the-leader. Single plane and line of pursuers were converging upon one another slowly.

"They want us alive," gritted Vinson. "We're ahead of all but a dozen or so, I estimate."

"Just run straight," said Narina.

The machine must have known that. Yet, it had enough planes to test the will of Harry Vinson, though it must have known the strength of that, also. So as the planes converged, the fore plane, some thousand yards ahead of Vinson's flying boat, turned and crossed his course. It lagged until it was beside Vinson, and then it cut in close, almost wingtip to wingtip, and edging closer and closer as the seconds passed.

"If they splash us," snapped Vinson, "we're lost; that damned machine can send a collection of its own kind to catch us before we can get to shore in a rubber boat."

Yet Harry kept his course, his face set hard and his teeth clenched tight. His hand toyed with the throttle and the manifold pressure, testing and trying to eke another few revolutions per minute from the whirling propellers. His controlling hand was tight as a wrench upon the wheel, immobile and determined.

The other plane edged closer; inches separated the wingtips, and the air, though smooth, caused the all too close wingtips to move and jockey above and below one another; to move closer and then to separate a bit.

Then the second plane raced across Vinson's course and slowed down. It rose above him and began to drop down upon him.