Baffled, his face displaying his guilt, Sandy Jim fled to the new airplane.

Without an instant of delay Bob widened the throttle opening!

CHAPTER XXXIII
THE SKY SQUAD WINS

Roaring across the runway, Bob’s one purpose was to use the airplane as a missile, to run it into the other before Sandy Jim could rise. In that he failed. The other ship was up, and Bob knew that he had so much speed that he must take off or ram into a hangar.

By a spurt of the cold engine, risking a stall to get his trucks over the hangar, Bob soared.

Leveling off, he glanced around. To his amazement he saw Al snapping on his safety belt in the rear cockpit seat. Al waved a hand, pointing to one side. And Bob looked.

“He’s having trouble,” Al screamed. “He’s working on something!”

Bob began to climb. If he could force Jim to earth as he had been herded the night before—

Jim saw his move, and with a demon’s venom drew a weapon and began to fire.

But Bob sideslipped, dropped steeply into a dive to come out of the slip, and as he drew the ship to level flight, heard something strike the prop, saw it shatter.