Project Vista was a top secret study conducted by prominent physicists, researchers, military officers, and staff at California Institute of Technology from April 1 to December 1, 1951. The project got its name from the Vista del Arroyo Hotel in Pasadena, California, which was selected as the headquarters for the study. The project was originally meant to analyze possible improvements relating to the relationship between ground and tactical air warfare. Initially, project Vista was not meant to be specific to a certain geographical region, but the focus was quickly set towards Western Europe, as the immediate threat to Europe, United States, and NATO was the Soviet Union. The report was buried after its release, and was only partially declassified in 1980.