What drives a man to spend 26 years performing night after night? To persevere through a stifling tour bus, bad food, strange women, flared tempers, a plane nearly blown from the sky? Just how did that troubled military brat with a dream claw his way from dirt-floor dive-bar shows to the world's biggest stages? Aviator, author, and Country Music Hall of Fame drummer Mark Herndon lived that dream with one of the most popular and celebrated bands of all time. He learned some hard lessons about people and life, the music industry, the accolades and awards, how easy it is to lose it all . . . and...