This book provides an in depth background of Astronauts and crew directly and indirectly impacted by this accident. It highlights the human impact of this event beyond the technology and technical details. Chien's book does not ignore the technical direct causes or the organizational factors leading to the accident but it is successful in not losing sight of the human element. For a detailed review of the technical elements of this accident, the Columbia Accident Investigation Board Report is widely available online. Mr Chien's book is an excellent complement to the CAIB Report.