The feud between this nation’s great air pioneers, the Wright brothers and Glenn Curtiss, was a collision of unyielding and profoundly American personalities. On one side, a pair of tenacious siblings who together had solved the centuries-old riddle of powered, heavier-than-air flight. On the other, an audacious motorcycle racer whose innovative aircraft became synonymous in the public mind with death-defying stunts. For more than a decade, they battled each other in court, at air shows, and in the newspapers. The outcome of this contest of wills would shape the course of aviation history—and take a fearsome toll on the men involved.