With such a wealth of irrefutable UFO evidence, why after 25 years is there still such a strong cover-up? Perhaps this is the core of the book - The US Air Force and CIA have been so determined to keep the truth from the world they will call black - white, as they did with the Condon Report (Donald appears almost bitter about this). It is interesting that this book managed to be published when, as Donald relates, so many similar books failed. A cracking read, a must for everyone. How can the authorities defend themselves?