Gallery: These Concrete Relics in Arizona Helped Satellites Spy on the Soviets

  • Image may contain Power Lines Cable Electric Transmission Tower Ground Electrical Device and Solar Panels
    Julie Anand and Damon Sauer
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    Calibration Mark X47 with Satellites
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    Anand / Sauer
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    Calibration Mark AF49 with Satellites
  • Calibration Mark AC48 with Satellites
    Julie Anand and Damon Sauer
    03

    04-Calibration-Mark-AC48-with-Satellites.jpg

    Calibration Mark AC48 with Satellites
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    Julie Anand and Damon Sauer
    04

    11-Calibration-Mark-AM43-with-Satellites.jpg

    Calibration Mark AM43 with Satellites
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    Julie Anand and Damon Sauer
    05

    03-Calibration-Mark-AE48-with-Satellites.jpg

    Calibration Mark AE48 with Satellites
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    Julie Anand and Damon Sauer
    06

    08-Calibration-Mark-AE49-with-Satellites.jpg

    Calibration Mark X48 with Satellites
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    Julie Anand and Damon Sauer
    07

    05-Calibration-Mark-AC47-with-Satellites.jpg

    Calibration Mark AC47 with Satellites
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    Julie Anand and Damon Sauer
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    06-Calibration-Mark-AD48-with-Satellites.jpg

    Calibration Mark AD48 with Satellites
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    Julie Anand and Damon Sauer
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    09-Calibration-Mark-AF49-with-Satellites.jpg

    Calibration Mark AE49 with Satellites
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    Julie Anand and Damon Sauer
    10

    02-Calibration-Mark-AJ48-with-Satellites.jpg

    Calibration Mark AJ48 with Satellites
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    Julie Anand and Damon Sauer
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    14Calibration-Mark-AK45-with-Satellites-Corona-Calibration-Mark-AK45-with-satellite-positions-and-orbits-at-time-of-exposure.-3022-x-2422-2016.jpg

    Calibration Mark AK45 with Satellites
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