Evidence, the Case for NASA UFOs

After conducting a 6-year scientific study into UFOs appearing on NASA Space Shuttle Missions throughout the 1990s, David Sereda reveals his findings. Complete volume with direct correspondence from NASA scientists and astronauts. Has NASA made contact with Extraterrestrial Intelligence? Is there a cover-up? Do NASA engineers study the UFO phenomenon to advance Aerospace Propulsion and Reverse Engineer alien technology? Do we know whom our visitors are?