Its not new news that Google was contracted to build the search engine[1].

"Google was also contracted to provide the search technology and servers which makes up “Intellipedia”, a massive, incredibly secure database through which over 100,000 United States spies and intelligence professionals from 16 government agencies share information. And the NSA has purchased numerous servers from Google, utilizing their search technology to analyze and organize massive amounts of secure data all over the world."

At this point I think it safe to assume its the exact same code Google used in 2010, just a bit dumber, since Googles search engine only learns by being used, and since there are far fewer using it, it learns slower.

[1]http://questioneverything2012.wordpress.com/2012/03/14/googl...