This document is available in higher fidelity, and with greater context, here: <a href="http://www.cufon.org/pdf/4_NSA_Tech_Journal_Articles.pdf" rel="nofollow">http://www.cufon.org/pdf/4_NSA_Tech_Journal_Articles.pdf</a><p>They comprise an exercise in interpreting coded messages, and are not intended to be interpreted as a genuine ET transmission.