The book that began the world's first forensic reconstruction of government UAP/UFO engineering programs and their Cold War origins. This new UFO evidence from a US Air Force Veteran and former Intelligence Contractor supports prior reporting from Jacques Vallee, George Knapp, Paul Stonehill along with reports from Secret KBG Files, research conducted at Skinwalker Ranch and more. During the late Cold War, Soviet aerospace engineer Valerij ?ernohajev compiled a series of engineering notes that outlined propulsion, energy, and material systems far beyond the technology of his era. Written in the 1980s-90s and hidden for decades, these papers mirror-sometimes line for line-programs and patents pursued by the U.S. government from 1980 to today. These notes, raw and unfiltered, are now translated and published for the first time, Engineering Infinity is the only accessible archive of UFO/UAP reverse-engineering from a government program. It is not speculation, but a technical record-dense, methodical, and decades ahead of the official disclosure narrative. Governments may want to debate timing, but the blueprint is already here. This is a historical reference, a roadmap informing advanced propulsion today, and the world's only available interstellar blueprint.