Unbeknownst to all and in the greatest secrecy, a parallel technological industry was developed on the basis of reverse engineering of extraterrestrial spacecraft previously obtained by the military. To fully understand this situation, we must go back in time and look at how military authorities treated the UFO question. From 1947 to 1969, the Air Force took charge of the management of the UFO phenomenon through three subsequent study projects: Sign, Grudge, and Blue Book. Despite the enormous number of reports treated by analysts, the results of each project remained negative as to the...