"Richter?" There was no answer. He checked his interphone to make sure it was working and called again. Silence. He swept his torch over the plain. No Richter. The German had vanished ... disappeared into the black maw of the crater.

"Richter! Richter, answer me...!" Silence. Apprehension swept him. He called again, desperately:

"Richter!"

"I'm all right, Commander." Richter's voice was low, seeming to have come from a distance. "You'd better get back into Red Dog."

"Where are you?" Crag demanded.

"I have a job to do."

"Come back." The German didn't answer. Crag was about to start in pursuit when he realized he didn't have the faintest idea what direction Richter had taken. He hesitated, baffled and fearful by turn.

Periodically he called his name without receiving an answer. He fumed, wondering what the German had in mind. He couldn't get into Bandit and, besides, he was unarmed. He popped back into Red Dog and looked at the chrono. If Gotch's figures were right the warhead would strike in four minutes. He climbed out of the rill.

"Warhead due in less than four minutes," he called into his mike.

"Get back into Red Dog, Commander," Richter insisted.