1 The earth has been observed periodically by visitors from another
planet.

2. This observation has increased markedly in the past two years.

"The only other possible explanation," I wrote, "is that,

{p. 9}

the saucers are extremely high-speed, long-range devices developed
here on earth. Such an advance (which the Air Force has denied) would
require an almost incredible leap in technical progress even for
American scientists and designers."

Nation-wide press and radio comment followed the appearance of the
article. This publicity was obviously greater than the Air Force had
expected. Within twenty-four hours the Pentagon was deluged with
telegrams, letters, and long-distance calls. Apparently fearing a
panic, the Air Force hastily stated that flying-saucer reports--even
those made by its own pilots and high-ranking officers--were mistakes
or were caused by hysteria.[1]

But three days later, when it was plain that many Americans calmly
accepted True's disclosures, the Air Force released a secret project
"Saucer" file containing this significant statement:

"It will never be possible to say with certainty that any individual
did not see a space ship, an enemy missile or other object."