Then his self-reproach turned into a growing anger against Jonner. Jonner was always so reticent, always required his orders to be obeyed without explanation. During the whole argument about taking an orbit around the asteroid, during the whole time it had taken to spiral down to a crash, he had not told Kraag how he expected them to stay alive until they were rescued. Kraag hadn't asked him, of course. Kraag had assumed Jonner was thinking in terms of his own figures. "I'm sorry about Stein," said Kraag, and meant it. "But it can't be helped now, Jonner. There's enough air for both of us, if you'll keep your mouth shut when the rescue ship gets here." "If I promised, I still wouldn't trust you and you wouldn't trust me. No, Kraag. The only way it'll work is for you to come out unarmed and let me go in and get the guns. Then I'll lock you in the control room till the rescue ship gets here." "One of us is a fool, Jonner, and you seem to think it's me. I'm not going to burn for murder. I've got the whip hand. You may have oxygen, but you've got to have food and water, too." Jonner laughed, without humor. "I've got enough of that for three Earth days and I can last longer," he said. "Before that time, I'll come and get you, Kraag. Don't go to sleep!" Kraag cursed and switched off the loudspeaker. But he kept an eye on Jonner through the glassite. Always, he had to watch Jonner--or stay on guard in the airlock. If there were only some way to lock Jonner out! But the only real lock was on the control room, and a man couldn't live in the control room with an enemy below who could cut the water and oxygen lines. Kraag would have to sleep some time. Jonner couldn't know when, but Jonner already was seven hours sleep up on him. Jonner could pick his own time to slip up to the sphere under cover of darkness, he could pick his own time to come through the lock. Maybe Kraag would be awake and could burn him down--but maybe not. There was only one thing to do. He'd have to take the attack to Jonner. * * * * * Still watching Jonner through every port he passed, always watching Jonner, Kraag hung a heat-gun on one of the hooks at his spacesuit's belt. He went back below, put the helmet on, and went out through the airlock. The shadow of the sphere stretched away toward his left. He was in sunlight. Jonner, still in the same spot, got to his feet but made no move to approach. "Welcome to the great outdoors," said Jonner. "I'm going to get you, Jonner," said Kraag grimly. "One way or another, I'm going to get you." He moved toward Jonner. Each step was a long, floating leap and it was hard to stay balanced before landing. Jonner moved, not away from him but sidewise. Kraag stopped. The effective range of the heat-gun was no more than 100 feet. If he tried to get close enough to Jonner to use it, Jonner could circle and get to the personnel sphere.