Kraag's mind was clear now. He had the situation under control. He glanced around the landscape at the scattered portions of the wrecked ship. There was the cargo hull, burst open, where Jonner had gotten his sledge hammer and the pick to bury Stein. Over there was a red sphere, ripped by the jagged gash of the meteor collision--one of the two hydrazine fuel tanks. The yellow sphere 30 degrees away from it was an oxygen fuel tank. Kraag leveled Jonner's gun and fired at the yellow sphere. The kick knocked him off the sphere, but as he somersaulted backwards he saw the projectile hit the ground. Still low and to one side. But he noticed something on the gun, he hadn't seen before. There were ridges for sighting along the barrel of Jonner's pistol. Regaining his position atop the sphere, Kraag pressed his back against the observatory dome, to brace himself against the gun's backlash. He aimed carefully at the yellow sphere and fired again. The yellow tank jumped--not from the impact, but from the spout of freed, expanding oxygen through the hole the bullet made. It moved and wobbled about in the weak gravity, like a dying balloon. When it stopped, Kraag knew he had destroyed half of Jonner's oxygen supply. "Good shot, Kraag," congratulated Jonner, with fatalistic irony in his tone. "Of course, I'm not as big a target as the tanks." "Each target in its own time," replied Kraag triumphantly, and looked around for the other yellow sphere. He had been afraid it might be one of the parts that had fallen over the horizon, but it wasn't. It was behind him, a little closer than the first. He hit it with one shot. Now Jonner had only the oxygen in his spacesuit tanks. Jonner had made no effort to move farther away. He was still visible on the horizon, from the knees up, moving in a great circle around the personnel sphere. Kraag aimed carefully and fired. He did not know the projectile's speed, but certainly it would be much faster than Jonner's rocks. After half a minute had passed, he knew he had missed. There was only one thing to do. He settled himself and fired again, trying to lead Jonner slightly. Again he missed. Methodically, taking his time, Kraag fired. Jonner walked on unconcernedly, circling. Kraag tried to fire so the path of his projectile would strike at the top of Jonner's strides, for then Jonner rose several feet into the air and his whole body was visible. Occasionally, Jonner would stop and hurl a stone at Kraag. One man was as inaccurate as the other. Jonner's stones went wide at that distance, and Kraag obviously had not hit Jonner with a bullet. At last Jonner stopped. He seemed to be fiddling with something that was right on the ground, below Kraag's line of vision. Then a tremendous stone, bigger than Kraag's head, came hurtling toward the sphere. Kraag ducked instinctively, but the missile passed 10 feet above him, still going well. "What in the devil!" exclaimed Kraag.