Russia and the U. S. have announced they are definitely planning several space machines. So it's quite possible that the first space ships or satellites may encounter other interplanetary machines, manned or otherwise. Our space devices may even be closely approached by such alien machines.
Donald KeyhoeWith control of the universe at stake, a crash program is imperative.We produced the A-bomb, under the huge Manhattan Project, in an amazingly short time. The needs, the urgency today are even greater. The Air Force should end UFO secrecy, give the facts to scientists,the public, to Congress. Once the people realize the truth, they would back, even demand a crash program...for this is one race we dare not lose.
Donald Keyhoe