Correspondence Relating to Project Blue Book, 1955

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This program provides primarily for rapid "on the spot" UFO
investigations and as a result the insufficient data cases.have been
reduced from 1 , during the :first half of FY 1955, to 6'/o duri
the
last half of the year. Unknowns have been reduced from
to 3
during the same time periods.
C.
GRAND BREAKOOWN
Balloons
-
92
Astronomical
-
96
Aircraft
- 120
Other {Reflection)
-
66
Insufficient Data for Evaluation -
35
Unknown
-
21
430
100