George Bibel is a professor of mechanical engineering at the University of North Dakota. He is the author of Beyond the Black Box: The Forensics of Airplane Crashes and Train Wreck: The Forensics of Rail Disasters. His books have been adapted into training courses and invited lectures at leading aerospace institutions such as NASA, MIT, and Boeing. Robert Hedges is a Captain, line check airman, and instructor at a major US airline. He is a former US Air Force pilot and instructor, and has served as an FAA Designated Pilot Examiner. He has nearly 30 years of experience in the cockpit, and has taught aviation safety at universities and airlines around the world.