To take off in an F–100 at dawn and cut in the afterburner and hurtle twenty-five thousand feet up into the sky so suddenly that you felt not like a bird but like a trajectory, yet with full control, full control of five tons of thrust, all of which flowed from your will and through your fingertips, with the huge engine right beneath you, so close that it was as if you were riding it bareback, until you leveled out and went supersonic, an event registered on earth by a tremendous cracking boom that shook windows, but up here only by the fact that you now felt utterly free of the earth—to
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