complicated by the complete absence of
identifiable wings, propellers, jets, or other conventional
methods of propulsion and guidance, as well as a total lack
of metallic wiring, vacuum tubes, or similar recognizable
electronic components. (See Attachment "F".) It is assumed
that the propulsion unit was completely destroyed by the
explosion which caused the crash.
A need for as much additional information as possible about
these craft, their performance characteristics and their
purpose led to the undertaking known as U.S. Air Force
Project SIGN in December, 1947. In order to preserve
security, liaison between SIGN and Majestic-12 was limited
to two individuals within the Intelligence Division of Air
Material Command whose role was to pass along certain types
of information through channels. SIGN evolved into Project
GRUDGE in December, 1948. The operation is currently being
conducted under the code name BLUE BOOK, with liaison
maintained throughthe Air Force officer who is head of the
project. On 06 december, 1950, a second object, probably os
similar origin, impacted the earth at high speed in the El
Indio - Guerrero area of Texas - Mexican border after
following a long trajectory through the atmosphere. by the
time a search team arrived, what remained of the object as
been totally incinerated. Such material as could been
recovered was transported to the A.E.C. facility at Sandia,
New Mexico, for study. Implications for the National
Security are of continuing importance in that the motives
and ultimate intentions of these visitors remain completely
unknown. In addition, a significant upsurge in the
surveillance activity of these craft beginning in May and
continuing through the autumn of this year has caused
considerable concern that new developments may be imminent.
It is for these reasons, as well