(aerial; ground; supplement) (2-9)
FRAME 2-10.
Engineer reconnaissance can be performed by ______________________ and ________________________, by
_____________________________ observers, or by ______________________ parties, either independently, or in
planned sequence.
(measurement; distortions) (2-33)
FRAME 2-34.
Aerial photography, while a valuable _____________________________________ to map study, should not be
relied upon exclusively for reconnaissance because detail may be ________________________________ or aircraft
grounded. Because of scale and image distortions, _____________________________________ may be unreliable.
2-21
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