Confirmed as Corona targets in interesting, short article: http://web.archive.org/web/20070823232758/http://www.hq.usace.army.mil/cepa/pubs/apr05/STORY23.HTM Excerpt: The February online edition of “Engineer Update” published an article by Mike Tharp of Los Angeles District about a huge grid of mysterious Maltese crosses in the Arizona desert. Research discovered that the project was built to calibrate the cameras of the then-top-secret CORONA spy satellites during the Cold War. “They briefed us on a project involving the placement of concrete aerial camera markers at approximately one-mile intervals throughout a 16x16-mile area in and mostly south of Casa Grande, Calif,” _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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