The rattling burst of the machine guns answered. A hail of lead tore through the branches in the distance, thudding against walls in the town of West Point across the highway.

"They're sending us an emissary under a white flag," came Captain Bascom's voice.

"We won't parley!" said Matt flatly. "Not tonight. Tell them to stay clear and we'll talk to them in the morning."

In a moment, Captain Bascom's voice was relaying Matt's decision through the electronic megaphones. Matt got back to the rail in time to see the figures disappearing beyond the circle of light.

He turned away, getting a chance to survey the roof for the first time. It was not flat, but in the shape of a vast amphitheatre. Apartments were built like penthouses all around the outer edge, ringing a park-like area in the center, where a grove of trees were growing on the edge of a dry-leaf-cluttered swimming pool. There were walks, now leaf-strewn, and the ivory gleam of statuary amid the shrubbery. Broad marble stairways led up to the roofs of the penthouse where he stood.

These, too, were landscaped, except for the four corners where the anti-aircraft guns pointed their snouts skyward like sentinels. A helicopter, like a monstrous deformed gadfly, was squatting on the sward atop the opposite penthouse.

Matt stepped back into the elevator house and called Captain Bascom.

"Post sentinels," he ordered. "Four. One at each corner. And relieve them every two hours."

"Right," said Captain Bascom. "Anything else?"

"No. That's all, except that you'd better get some rest."