I don't have a good reason to believe that this is real, but if it is the most surprising part to me is the "mapreduce" rule definition in there. As far as I know the only group with a C++ mapreduce implementation called "mapreduce" that also uses protocol buffers (the "proto:" block is protocol buffers) is Google. This seems to say to me that the NSA is using a Google implementation of map reduce. That can't possibly be right, can it?
Well, if the NSA were among the group of organizations with a C++ mapreduce implementation (developed in-house) the code probably wouldn't be on github or otherwise divulged to the public... seems like a rather large leap of logic to assume they are using Google's code.
While mapreduce isn't my area of expertise,
my guess is it's probably easier for them to use mapreduce/ and Hadoop than invent their own wheel in some cases.