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(*AERIAL RECONNAISSANCE
1
(*SEA ICE
1
ALASKA
1
ARCTIC OCEAN
1
ARCTIC REGIONS)
1
C-121 AIRCRAFT
1
C-121K AIRCRAFT
1
CLOUDS
1
DISTRIBUTION
1
FLIGHT PATHS
1
ICE)
1
Ice and Permafrost
1
NAVAL AIRCRAFT
1
OBSERVATION AIRCRAFT
1
POLAR REGIONS
1
RADAR EQUIPMENT
1
REMOTE AREAS
1
SEA WATER
1
Snow
1
VISIBILITY
1
WEATHER
1
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