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pauldrye ([personal profile] pauldrye) wrote2022-12-17 09:56 am
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Spy Satellite Calibration Range

In the northeast of Fort Huachuca, Arizona is a peculiar arrangement of tri-bars, largely only visible from the air. Nazca Lines notwithstanding, these really were intended for viewing from above: to test the resolving power of various 60s-era American spy satellites from Corona onward.



Fort Huachuca calibration range, seen from the air