In the aftermath of a cargo plane crash near Miami, investigators have secured both black boxes from the wreckage — a moment that transforms chaos into the beginning of understanding. These two small devices, one recording the mechanical language of flight and the other the human voice of the cockpit, hold within them the closest thing to truth that modern aviation science can offer. The cause of the crash remains unknown, but the tools to find it are now in hand, and the long, methodical work of reconstruction has begun.