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Cold War Signals Intel System JUMPSEAT Declassified by NRO

2/5/2026

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Summary

Story summary

The National Reconnaissance Office (NRO) declassified JUMPSEAT, a Cold War–era signals intelligence system that operated from 1971 to 1987 and remained active until 2006.
JUMPSEAT comprised eight satellites that collected electronic signals from the Soviet Union and its allies.
The satellites used a Molniya orbit, enabling prolonged observation of high northern latitudes.
Some mission details remain classified.

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Story summary

The National Reconnaissance Office (NRO) declassified JUMPSEAT, a Cold War–era signals intelligence system that operated from 1971 to 1987 and remained active until 2006.
JUMPSEAT comprised eight satellites that collected electronic signals from the Soviet Union and its allies.
The satellites used a Molniya orbit, enabling prolonged observation of high northern latitudes.
Some mission details remain classified.