MAKE A MEME View Large Image A51 Sigma.svg Many patches from Groom Lake projects show the Greek letter Sigma in inverted form which often identifies as a technical term for how well an object reflects radar waves a crucial parameter in developing stealth aircraft ...
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Keywords: A51 Sigma.svg Many patches from Groom Lake projects show the Greek letter Sigma in inverted form which often identifies as a technical term for how well an object reflects radar waves a crucial parameter in developing stealth aircraft Unknown 16 11 10 June 2010 UTC author Flakeyswilson Original upload log en wikipedia A51_Sigma svg wikitable - 2010-06-10 16 11 244×241× 1722 bytes Flakeyswilson <nowiki> I ~~~ created this work entirely by myself ~~~~~ ~~~ </nowiki> Stealth technology
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