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Orbits and schedules of satellites are well-known. A balloon gives you eyes in the sky outside of those known schedules and longer hover times.



Balloons have the same problem; you can see them. You know when one's over your ICBM field.


“Prior Chinese Balloon Incursions Over U.S. Went Undetected, Officials Say” https://www.wsj.com/articles/biden-decision-to-delay-shootdo...


NORAD claims it was tracking it as soon as it started heading across the pacific




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