mig-25

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mikoyan

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supersonic

viktor belenko

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soviet air force

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xb-70

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f4 phantom

cold war

b-70 bomber

mig-31

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f-15

air superiority fighter

belenko defection

soviet union defection

radar

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mustard documentary

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antarctic snow cruiser

penguin 1

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polar exploration history

united states antarctic service expedition

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admiral richard byrd third expedition

the lost 1939 antarctic snow cruiser

mechanical age of antarctic expeditions

south pole

antarctica claims

driving to the south pole

diesel-electric hybrid

mustard documentary