But even as the braking blasts gouted out redly from under the hood and the car crunched toward a stop in their midst, even as Harvey's people broke to either side and pistols popped with queerly toylike reports, the thunder multiplied until it was impossible that the Lunar '69 was causing it, until it was like the thunder of a thousand invisible jets crushing the air around them. The sky shifted, rocked. The road shook. There came a shock that numbed Ellenby's feet and sent everyone around him reeling, and a pounding, smashing sound that made any remembered noise seem puny. The Lunar '69, which had stopped a dozen feet from Ellenby, was pitching and tossing like a silver ship in a storm. Vera-Ellen was gripping the steering wheel with one hand and motioning to him frantically with the other. In the seat beyond her Rickie Vickson was jouncing as if in a merry-go-round chariot. Ellenby lurched as a hand clutched his shoulder and a staggering Madson howled in his ear through the tumult, "Now you've got your rotten bombs!" Between him and the car Harvey's bullet head reared up and as suddenly dropped away. Looking down, Ellenby saw that a chasm four feet wide had split the road between him and the car. Its walls were raw, smoking earth and rock. Down it Ellenby saw vanishing, in one frozen moment, Harvey and the Keats and the little brass spectroscope. Then Ellenby realized he had grabbed Madson by the shoulder and thrown the two of them forward and shouted "Jump!" For a moment the chasm gaped beneath them and a white little face stared upward. Then the chasm closed with a giant crunch and Ellenby's hand caught the side of the heaving car and he pitched into the back seat. Through the diminishing thunder and shaking there came the toy roar of the car's jet and a new movement tipped him backward and he was looking toward the hill and it was getting bigger. He tried to put his feet down and felt something bulk under them. For a moment he thought it was Madson, but Madson was beside him on the seat, and then he saw it was George. He looked up and Rickie Vickson was watching him from where she was crouched in the front seat, her eyes without the teleglasses looking as foxy as Widgie's, whom she was holding close to her wrinkle-etched cheek. "Vera-Ellen had to conk him," she explained, her gaze dipping to George. "The bum tried to betray us." The pitching of the car had given way to a steady forward lunge. Ellenby nodded dully at Rickie and hitched himself around and looked back. Harvey's people were scattering like ants through a dust cloud rising from the road. The house on the hill still stood, though there were more and larger cracks in it and a nimbus of whiter dust around it. By the bridge the copter had crashed and was flaming brightly. A tiny figure was running away from it. * * * * * Ellenby's face slowly lightened with understanding.