On April 21, 2011 the National Security Agency posted documents from their Technical Journal which had some interesting articles about extraterrestrials. Some have assumed that these documents were pertaining to messages received from extraterrestrials, an easy mistake to make with article titles such as “Key to the Extraterrestrial Messages.” These documents are actually related to exercises for practicing deciphering coded messages that extraterrestrials may send us in the future. However, there is still a story here, because these exercises were started by a prominent NSA cryptologist who believed more attention needed to be given to the investigation of UFOs and the possibility that we may be contacted soon.
The cryptologist was Lambros D. Callimahos, his biography can be read in the NSA’s Hall of Honor, which he was inducted to in 2003. They state that Callimahos, “played a crucial role in shaping cryptologic development at NSA.” He had developed a special class, designated CA-400, for elite cryptanalysts, if they passed they would become members of what was labeled the Dundee Society. The group’s real purpose was so secret that it was named after an empty Dundee marmalade jar he kept his pens in on his desk .... http://www.openminds.tv/nsa-practices-deciphering-et-signals-668/