As soon as the ship landed, Rob unbuckled and, with Harry Goode, hurried to the compartment where Mort had been placed. Harry took the injured man’s pulse and told Rob that it was weak.

“We’ll get him to the infirmary immediately,” Rob said and went to the radio nook just off the pilot’s nest. He put through a call to the Space Command headquarters.

“General Carmichael speaking,” came a firm, booming voice over the amplifier. “Come in, X-500.”

“This is Lieutenant Allison, sir,” Rob spoke. “We’ve had an accident aboard and a man has been badly hurt. Will you send out a stretcher for him?”

“Certainly,” came the reply. “What was the man’s duty?”

“Mechanic 101, sir,” Rob answered.

“We’ve got a replacement for him,” the general said. “While we’re on the subject of bad news, Allison, I’ll give you mine.”

“What’s that, sir?” Rob asked anxiously.

“Just that the people of Earth are closer than ever to panic stage,” said General Carmichael. “A switchboard operator on Luna half guessed our secret and when she telephoned someone on Earth the operators back there picked up the message. You won’t have much time for layover here, Allison. You’ll have to be off almost immediately so that we can report success of Operation Big Boy as soon as possible.”

Rob suddenly went cold with dread and disappointment. Dulcie Gerard, whom he had considered one of the squarest persons he had ever met, had suddenly destroyed his faith in her completely. It made Rob wonder if making themselves unpopular wasn’t a confirmed Gerard trait.