Donal asked no questions and the two Groupmen volunteered nothing until they were once more back safely within the lines of their own sentry posts. Then Donal turned toward Lee.

“Well, Groupman,” he said. “What did you smell?”

Lee hesitated. His voice, when he answered, had a note of puzzlement in it.

“I don’t know, sir,” he answered. “Something—sour, sort of. I could just barely smell it.”

“That’s the best you can do?” inquired Donal. “Something sour?”

“I don’t know, sir,” said Lee. “I’ve got a pretty good nose, Force—in fact,” a note of belligerence crept into his voice. “I’ve got a damned good nose. I never smelled anything like this before. I’d remember.”

“Have either of you men ever contracted on this planet before?”

“No,” said Lee.

“No, sir,” answered Morphy.

“I see,” said Donal. They had reached the same log from which they had started a little less than three hours before. “Well, that’ll be all. Thank you, Groupmen.”

He sat down on the log again. The other two hesitated a moment; and then went off together.

Left alone, Donal consulted the map again; and sat thinking for a while. Then he rose, and hunting up Morphy, told him to take over the Force, and stay awake. Donal himself was going to Command HQ. Then he took off.

Command HQ was a blackout shell containing a sleepy orderly, a map viewer and Skuak.

“The commandant around?” asked Donal, as he came in.

“Been asleep three hours,” said Skuak. “What’re you doing up? I wouldn’t be if I didn’t have the duty.”

“Where’s he sleeping?”

“About ten meters off in the bush, at eleven o’clock,” said Skuak. “What’s it all about? You aren’t going to wake him, are you?”

“Maybe he’ll still be awake,” said Donal; and went out.

Outside the shell, and the little cleared space of the HQ area, he cat-footed around to the location Skuak had mentioned. A battle hammock was there, slung between two trees, with a form mounding its climate cover. But when Donal reached in to put his hand on the form’s shoulder, it closed only on the soft material of a rolled-up battle jacket.

Donal breathed out and turned about. He went back the way he had come, past the Command HQ area, and was stopped by a sentry as he approached the village.

“Sorry, Force,” said the sentry. “Commandant’s order. No one to go into the village area. Not even himself, he says. Booby traps.”

“Oh, yes—thank you, sentry,” said Donal; and, turning about, went off into the darkness.