In May 1962, a plane fell from the sky over the heartland of America, disrupting the peace of the little towns of Centerville, Iowa, and Unionville, Missouri, and shaking the confidence of airline passengers nationwide. The story was shocking, puzzling, frightening . . . and in following years, was almost completely forgotten by the world at large. Enfys McMurry has spent countless hours poring through accident investigation reports of the Federal...