"It's a motor," said Lockley. He could not feel complete relief. "Sounds like a truck. I wonder--" He felt uneasiness. But it was absurd. Only human beings would use motor trucks. There was a glow in the distance behind them. It came nearer as the sound of the motor approached. The motor's mutter became a grumble. It was definitely a truck. They could hear those other sounds that trucks always make in addition to their motor noises. It came up to the curve they'd rounded last. Its headlight beams glared on the cornstalks growing next to the highway. One headlight appeared around the turn. Then the other. An enormous trailer-truck combination came bumbling toward them. Jill held up her hand for it to stop. Its headlights shone brightly upon her. Airbrakes came on. The giant combination--cab in front, gigantic box body behind--came to a halt. A man leaned out. He said amazedly, "Hey, what are you folks doin' here? Everybody's supposed to be long gone! Ain't you heard about all civilians clearing out from twenty miles outside the Park? There's boogers in there! Characters from Mars or somewhere. They eat people!" Even in the starlight Lockley saw the familiar Wild Life Control markings on the trailer. He heard Jill, her voice shaking with relief, explaining that she'd been at the construction camp and had been left behind, and that she and Lockley had made their way out. "We want to get to a telephone," she added. "He has some information he wants to give to the Army. It's very important." Then she swallowed. "And I'd like to ask if you've heard anything about a Mr. Vale. He was taken prisoner by the creatures up there. Have you heard of his being released?" The driver hesitated. Then he said, "No, ma'm. Not a word about him. But we'll take care of you two! You musta been through plenty! Jud, you go get in the trailer, back yonder. Make room for these two folks up on the front seat." He added explanatorily, "There's cases and stuff in the back, ma'm. You two folks climb right up here alongside of me. You sure musta had a time!" The door on the near side of the truck cab opened. A small man got out. Silently, he went to the rear of the trailer and swung up out of sight. Jill climbed into the opened door. Lockley followed her. He still felt an irrational uneasiness, but he put it down to habit. The past few days had formed it. "We've been cartin' stuff for the soldiers," explained the driver as Lockley closed the door behind him. "They keep track of where that terror beam is workin', and they tell us by truck radio, and we dodge it. Ain't had a bit of trouble. Never thought I'd play games with Martians! Did you see any of 'em? What sort of critters are they?" He slipped the truck into gear and gunned the motor. Truck and trailer, together, began to roll down the highway. Lockley was irritated with himself because he couldn't relax and feel safe, as this development seemed to warrant.