This balloon then was an enemy. Dimly the truth entered Johnny’s mind. He was beginning to connect the balloon with the little yellow men who had attacked him, and with the earth shudder, but how it all fitted in he could not tell. Who was the enemy?
His eyes were on the two ships of the sky. The airplane, having circled close to the cabin of the balloon, had fired a volley, whether directly at it or above or below it, he could not tell. Now the plane circled close again. But what was this? A man was climbing to the upper rigging of the plane. Now he was standing, balancing himself directly on top. Johnny recognized the slim figure of Pant. Now the plane, with engine dead, drifted toward the cabin of the balloon. They were almost even with it. There came three snorts of the engine and the plane shot beneath the cabin, then out on the other side. But Pant? Where was he? He was not on the upper surface of the plane nor climbing down on the rigging.
Johnny sat down dizzily. Cold perspiration stood out on his brow. The excitement, following hours of fatigue and near starvation, was too much for him; his head swam; his eyes blurred.
But he shook himself free from these sensations and gazed skyward. He expected to see Pant come crashing down to earth. He did not. There could be but one answer: he had leaped in midair for the underrigging of the cabin of the balloon and had caught it. What a feat! It made Johnny’s head dizzy to think of it. He did not doubt for one moment that Pant would do it. But what could be his purpose? Had the balloon broken loose? Was it drifting free, a derelict? This he could not believe, for the thing had seemed to travel in a definite direction. Besides, if this was true, why the machine-gun fire? Had they killed the only occupants? Johnny hoped not. He hated death. Whatever the men had done, he hoped they had not been killed. But why had Pant taken such chances?
Then as he looked, he saw a package drop over the side of the cabin. It fell straight downward, with tremendous velocity. But there came a sudden check. It was attached to a parachute. The parachute had opened. Its course was now marked by a little down-rush, then a pause, then a rush again.
He had been so intent on his observation of this that he did not realize that once more an object had fallen from the car. This time it was a man. He also was attached to a parachute.
As he came into Johnny’s circle of vision, the boy rose and waved his arms, crying with a hoarse shout of joy:
“Pant! Pant! Good old Pant! He’s safe!”
When Dave Tower and Jarvis led the little band of miners back through the cave, they found, as they had expected, that a small tunnel had been cut out of the frozen earth to form an entrance to the mine. Before entering this tunnel, they paused to look about them. Ranged about the walls, piled tier on tier, were black cubes of sand and gravel. From these came the glitter of yellow metal. These were cubes of pay dirt which would yield a rich return when the spring thaw came. Bits of cable, twisted coils of wire, a pair of rusty pliers, told that electricity had been employed as power for mining.