"We're down," said Borden with relief. "Now we've got to find out if anybody saw us land, and if so, whether they'll insist on killing us or whether we can make friends."

Sattell said, "You've got to arm me, Borden! Dammit, you can't leave me unarmed on a hostile planet!"

"I'd like to have four weapons ready instead of three, though if we have to fight a whole planet even four won't be much good. But I can't risk letting you have anything dangerous in your hands," Borden said.

Sattell ground his teeth.

Jerry said apologetically, "Shall I test the air, sir?"

Borden nodded. He regarded Sattell with a weary, worried frown, while Jerry readied the test. The situation was bad, but Sattell was troublesome too.

Two months ago, while the drive was still in process of repair, Borden had heard a strangled cry from Ellen. He found her struggling to scream as she fought Sattell.

Borden's appearance had ended the struggle, of course. Sattell had been confined to his bunk for two weeks before he was able to move about again. But Borden hadn't been able to kill an unconscious man then, and he couldn't kill Sattell in cold blood now. But Sattell could kill anybody. And he would, if he got the chance.

"It's the devil, Sattell," Borden said somberly. "If I didn't think you were a rat I could make a bargain to forget what's happened until we get the ship safely home. But I don't think you'd keep a bargain."

Sattell snarled at him and turned away. Jerry looked up from the tiny air-testing cabinet. He'd drawn in a sample of outer air and a silent discharge had turned its oxygen to ozone, which a reagent absorbed. A hot silver wire stayed bright, and so proved the absence of chlorine or sulphur, CO2 tested negligible, and hot magnesium took up nitrogen. The remnant of the sample did not react with reagent after reagent, so it had to be noble gases.