Unfriendly Skies: 20th & 21st Centuries, is the fourth edition of the book that was first published in 1978. It details and documents the arrogance and corruption responsible for numerous airline disasters, including the hijackings of four airliners on 9/11. It is written by former federal agent Rodney Stich. More information on his background is at www.defraudingamerica.com/stich_bio.html.