And Then What Happened? reviews the career of Harold R. Harris that for a remarkable near-eighty years involved every aspect of aviation. An engineer, he was notable for his fearless innovations, from night flying and airport lighting to test piloting to techniques for overseeing the redesign of aircraft for cotton dusting or the transport of large heavy machinery. Harris was unique in his ability to transition between the worlds of the military (in both World Wars) and commercial aviation. A practical man, he excelled at hands-on operations. A good deal has been written about his early...