Documents / Official release
This is a Secret History Staff monograph by Gregory W. Pedlow and Donald E. Welzenbach of the Central Intelligence Agency, published in 1992. It gives a history of the CIA's manned overhead reconnaissance program from 1954 to 1974, covering the development and operation of the U-2 and the A-12 OXCART aircraft. It covers overflights of the Soviet Union, the 1960 downing of Francis Gary Powers, and later operations. One section is titled "U-2s, UFOs, and Operation BLUE BOOK."
From the source:Release of 2026-06-12 This CIA History Staff document chronicles the complete history of the U-2 and OXCART (A-12) high-altitude reconnaissance aircraft programs from 1954 to 1974, detailing their development, operations over the Soviet Union and other targets worldwide, the famous downing of Francis Gary Powers in 1960, organizational reforms following that incident, and the eventual transfer of operations from CIA to Air Force control. A more redacted version of this document has been available on CIA's public website.
“Hill”15 pages
259
Chapter 6
The U-2's Intended Successor:
Project OXCART,
1956-1968
Before the U-2 became operational in June 1956, CIA project offi
cials had estimated that its life expectancy for flying safely over the
Soviet Union would be between 18 months and two years. After
overflights began and the Soviets demonstrated the capability of
tracking and attempting to intercept the U-2. this estimate seemed
too optimistic. By August 1956, Richard Bissell was so concerned
·a6out the U-2's vulnerability that he despaired of its ability to avoid
destruction for six months, let alone two years.
To extend the U-2's useful operational life, project officials first
attempted to reduce the aircraft's vulnerability to detection by Soviet
radars. Project RAINBOW's efforts 10 mask the radar image of the
U-2 not only proved ineffective, but actually made the aircraft more
vulnerable by adding extra weight that reduced its maximum altitude.
Because Soviet radar operators continued to find and track U-2s
equipped with antiradar systems, the CIA canceled Project
RAINBOW in May 1958.
Long before the failure of Project RAINBOW, Richard Bissell
and his Air Force assistant. Col. Jack A. Gibbs, had begun to look for
a more radical solution to the problem of Soviet radar detection-an
entirely new aircraft. {n the late summer of 1956, the two officials
visited a number of airframe contractors in a search for new ideas.
Among the more unusual was Northrop Aviation's proposal for a gi
gantic aircraft with a very-high-lift wing. Because it would not be
made of metal, the wing would require a type of bridge truss on its
upper side to give it rigidity. The proposed aircraft would achieve
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Official release, from the pursue collection. The PDF is mirrored here; the original link is under it. 406 pages are in the text index: search them above, or from the library's search.