 How did Gwayne subdue the alien leader?
Captain Gwayne cursed and rolled over, reaching for his boots. Even the deep gorge where they'd found Hennessy's carefully buried ship was completely hidden by the fog. Earth had ordered him to detour here, after leaving his load of deep-sleep stored colonists on Official World 71, to check on any sign of Hennessy. It was too far to see clearly, but Gwayne grabbed the microphone, yelling into the radio toward the cadets. One seemed to be almost eight feet tall, leading the others directly toward the spacesuited cadets. One, at the front, was stuttering into life, and Gwayne dashed for it as the exit port slid back. Then Gwayne spotted them; surrounded by the menacing horde.
 He wrestled it with his hands.
 He ran over it with the Jeep.  He wrestled it with his hands.  The leader surrendered.  He used a spear to injure it.