The runner leaped on at top speed, but he automatically counted the reports behind him and a smile flashed over his face when the count told him that the second rifle was being used. He would have known it in no other way, for the spacing of the shots had not varied. Again the count told of the second change and a moment later another extra report confirmed his belief that the roof was being closely watched by his friends. A muffled shout came from the building and a spurt of fire flashed from the loophole, but toward the sky and he fancied he heard the sound of a falling body. Far to his left jets of flame winked along a straggling line, the reports at times bunched until they sounded like a short tattoo, while behind him the regular crashing of an unceasing Winchester grew steadily more distant and flatter. His breath was coming in gulps now for he had set himself a pace out of keeping with the habits of years and the treacherous sand made running a punishment. During the last hundred feet it was indeed well for him that Johnny shot fast and true, that the five-hundred grain bullets which now sang over his aching head were going straight to the mark. He suddenly, vaguely realized that he heard wrangling voices and then he threw himself down onto the sand and rolled and clawed under the building, safe for the time. Gradually the jumble of footsteps over his head impressed themselves upon him and he mechanically drew a Colt as he raised his head from the earth. Suddenly the roaring steps all went one way, which instantly aroused his suspicions, and he crawled hurriedly to the black darkness of a pile of sand near the bottom of the south wall, which he reached as the steps ceased. No longer silhouetted against the faint light of the open ground around the building, a light which was bright by contrast with the darkness under the floor, he placed the canteen on the ground and felt for chips and odds and ends of wood with one hand while the other held a ready gun. There came the sharp, plaintive squeaking of seldom-used hinges, which continued for nearly a minute and then a few unclassified noises. They were followed by the head of a brave man, plainly silhouetted against the open sand. It turned slowly this way and that and then became still. "See anythin'?" came a hoarse whisper through the open trap. There was no reply from the hanging head, but if thoughts could have killed, the curious whisperer would have astonished St. Peter by his jack-in-the-box appearance before the Gates. "If he did, we'd know by now, you fool," whispered another, who instantly would have furnished St. Peter with another shock. "He'd more likely feel somethin', rather than see it," snickered a third, who thereupon had a thrashing coming his way, but did not know it as yet.