After Paul Hill had a UFO sighting in early 1950 he began a 25 year quest, working as an unofficial clearinghouse for NASA, collecting and analyzing sightings' reports for physical properties, propulsion possibilities, dynamics, etc.
Official NASA Policy prevented him from proclaiming his findings that, "UFOs obey, not defy the laws of physics." vindicating his own sighting and thousands of others, he proves that UFO technology is not only explainable, but attainable.
The Hiller VZ 1 Pawnee was the first in series of VTOL aircraft that Dr. Hill helped to design in an attempt to replicate UFOs and their propulsion systems as well as flight characteristics.
Those with an interest in determining what has been learned by the
National Aeronautics and Space Administration (NASA) about UFOs will
in most cases be presented with the following press release:
No branch of the United States Government is currently involved with or responsible
for investigations into the possibility of advanced alien civilizations
on other planets or for investigating Unidentified Flying Objects
(UFO's). The US Air Force (USAF) and the National Aeronautics and
Space Administration (NASA) have had intermittent, independent investigations
of the possibility of alien life on other planets; however, none of
these has produced factual evidence that life exists on other planets,
nor that UFO's are related to aliens. From 1947 to 1969, the Air Force
investigated UFO's; then in 1977, NASA was asked to examine the possibility
of resuming UFO investigations. After studying all of the facts available,
it was determined that nothing would be gained by further investigation,
since there was an absence of tangible evidence.
In October 1992, NASA was directed by Congress to begin a detailed
search for artificial radio signals from other civilizations under
the NASA Towards Other Planetary Systems (TOPS)/High Resolution Microwave
Survey (HRMS) program (also known as the Search for Extraterrestrial
Intelligence project). Congress directed NASA to end this project
in October 1993, citing pressures on the US Federal budget. The HRMS
did not detect any confirmed signal before it was stopped. However,
similar work continued through efforts of private groups and through
academic institutions. The Search for Extraterrestrial Intelligence
Institute (SETI Institute) in Mountain View, CA, effectively replaced
the Government project, borrowing the signal processing system from
NASA. The SETI Institute is a nonprofit corporation conducting research
in a number of fields including all science and technology aspects
of astronomy and planetary sciences, chemical evolution, the origin
of life, biological evolution, and cultural evolution.
During several space missions, NASA astronauts have reported phenomena
not immediately explainable; however, in every instance NASA determined
that the observations could not be termed "abnormal" in the space
environment. The 1947 to 1969 USAF investigations studied UFO's under
Project Blue Book. The project, headquartered at Wright-Patterson
Air Force Base, Ohio, was terminated December 17, 1969. Of the total
of 12,618 sightings reported to Project Blue Book, 701 remain "unidentified."
The decision to discontinue UFO investigations was based on an evaluation
of a report prepared by the University of Colorado entitled, "Scientific
Study of Unidentified Flying Objects;" a review of the University
of Colorado's report by the National Academy of Sciences; previous
UFO studies; and Air Force experience investigating UFO reports during
the 1940's, '50's and '60's. As a result of experience, investigations,
and studies since 1948, the conclusions of Project Blue Book were:
(1) no UFO reported, investigated, and evaluated by the Air Force
was ever a threat to our national security; (2) there was no evidence
submitted to, or discovered by, the Air Force that sightings categorized
as "unidentified" represented technological developments or principles
beyond the range of modern scientific knowledge; and (3) there was
no evidence indicating that sightings categorized as "unidentified"
were extraterrestrial vehicles.
With the termination of Project Blue Book, the USAF regulation establishing
and controlling the program for investigating and analyzing UFO's
was rescinded. Documentation regarding the former Project Blue Book
investigation was permanently transferred to the Modern Military Branch,
National Archives and Records Service, in Washington, DC 20408, and
is available for public review and analysis.
Since the termination of Project Blue Book, nothing has occurred
that would support a resumption of UFO investigations by the U.S.
government.
Since neither NASA nor the Air Force is engaged in day-to-day UFO
research, neither one reviews UFO-related articles intended for publication,
evaluates UFO-type spacecraft drawings, or accepts accounts of UFO
sightings or applications for employment in the field of aerial phenomena
investigation.
It should be noted that there are very few indications of deep involvement
in the Majestic projects on the part of NASA personnel; therefore, that
NASA should take a stance very much like that of Project Blue Book is
not surprising
Hampton Roads Publishing Company Inc. ISBN 1-57174-027-9 
Paul R. Hill (1909-1990) was a pioneering aeronautical research engineer who spent a lifetime on the cutting edge of research and development for NACA and NASA. After his death his