Corona Calibration Marker

Another look at the Corona Satellite calibration markers along the road by I-8 & I-10 junction in Arizona. These were built between 1966 and 1967 by the Army Corps of Engineers and each marker measure 60ft across as you can see with the Boneyard Defender as reference. #coronasatellite #coronasatellitecalibrationtargets #usaf #exploringarizona #aviationsafari #aviationpreservation #boneyardsafari #aviationadventures #boneyarddefender