west reported seeing a formation of 9 flying saucers streaking across the sky), and the Roswell Crash, which will be discussed later in this paper.
             Nathan F. Twining, head of PROJECT SIGN, concluded in his "Estimate of the situation" to Brigadier General George Schulgen, that the continued study of UFOs was necessary to national defense, and gave possible explanations for the phenomenon: A secret USAF plane his department wasn't informed of, a soviet psychological experiment, an unexplained atmospheric phenomenon, or an extraterrestrial spacecraft.
             In February of 1949, Project Sign officially became Project Grudge, sightings were again examined and it concluded in the "Grudge Report" that 23% of all cases were unexplained. The study of the 273 sightings in 1951 became Project Blueboo
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