Nearly time! The Flight Leader ran his engine up again, its humming drone rising to a full deep-chested roar. The other pilots followed suit, engine after engine picking up the chorus and filling the air with deafening and yet harmonious sound. A man stood just clear of the wing-tips to either side of each machine holding a cord fast to the wood blocks chocked under the wheels; another man or two clung to each tail, holding it down against the pull of the propeller, their sleeves, jacket tails, and trouser legs fluttering wildly in the gales which poured aft from the whirling screws and sent twigs and leaves and dust flying and dancing back in a rushing stream. So the pilots sat for a minute, their faces intent and earnest, listening to the hum and beat of their engines and note of their propellers' roar, watching the Flight Leader's movements out of the tail of their eyes. He eased his engine down; and promptly every other engine eased. He waved his hand to right and left, and the waiting men jerked the chocks clear of his wheels; and five other hands waved and five other pairs of chocks jerked clear. He moved forward, swung to the right with a man to each wing tip to help swing him, and rolled steadily out into the pen; and five other machines moved forward, swung right, and followed in line astern of him. He wheeled to the left, moved more quickly, opened his engine up, ran forward at gathering speed. Moving slowly his machine had looked like a lumbering big fat beetle; skimming rapidly across the grass, with its nose down and its tail up, it changed to an excited hen racing with outstretched head and spread wings; then--a lift--an upward swoop and rush--and she was ... a swallow, an eagle, a soaring gull--any of these you like as symbols of speed and power and grace, but best symbol of all perhaps, just herself, for what she was--a clean-built, stream-lined, hundred-and-umpty horse, fast, fighting-scout aeroplane.