Then one night the moon rose clear and clean above a mistless world. The more brilliant stars burnt steadily in the velvet of the night. A silence brooded over the rolling downs and the deep-shadowed valleys. On the aerodrome was deliberate activity and suppressed excitement. The Handley-Page, on which the C.O. intended to carry out the first raid, spread its long splendid wings under the eager hands of the mechanics, who for long days had been preparing everything--had been testing every wire and bolt, and had kept the machine on the pinnacle of efficiency. Now they swarmed round it like keen and careful ants, pinning up the wings, filling the engine tanks with hot water pumped up from a wheeled boiler, known as the "hot potato waggon," exercising machine-guns, and testing the controls. The two engines were started up, and roared with a surging vibrant clamour for ten minutes. Then the full power was put on, and for a few minutes the noise became ear-splitting, and the waves of sound rolled across the aerodrome and came echoing back from the hangars. The wheels strained restlessly against the triangular wooden "chocks." The tail and the wings shook and quivered with repressed emotion. The exhaust-pipes of the motors grew red hot, long blue flames streamed out of them, and thousands of red sparks went whirling along through the shivering tail-planes into the darkness behind. It was an awe-inspiring sight. I asked the silent preoccupied warrant-officer engineer, a rugged naval man who knew the soul of the mighty Rolls-Royce engines, if it was all right. I could not believe that those red-hot pipes and blue flames were not a sign of an engine gone amok and hopelessly overheated. The thunder and the awful expression of power frightened me. The engineer, however, assured me that it was all correct, and explained that the engines were just the same in the daytime, though the heat and the sparks could not be seen in the light. Near the towering bulk of the machine with its two deafening motors stood the pilot, the C.O., who was a frail-looking figure, with his youthful fair-haired face almost hidden in the wide black fur-lined collar of his thick padded overall suit. He stood there with his flying-cap and his goggles in his hand, waiting to climb into the machine when the mechanics had finished the test of the engines. I went over to wish him luck, feeling awestruck at his coolness. On the grass of the aerodrome shone the great flares. Above hung the heartless stars, and the blank-faced moon swung rather mockingly, it seemed to me, above the dim patterns of the wooded landscape. The little fair-haired figure stood by the hot-breathed steed which he was going to ride, and it seemed that he was too small, too frail--that any human being was too frail--to take that monster of steel and wood and canvas into the unknown dangers which lay beyond the cold glare of the star-shells on the horizon.