Wow!  So much vitriol over this, its hard to believe. ...

Somebody asked me to support a statement I made RE: the NSA could take down BTC if it wanted to.

In response I did an off the cuff estimate of NSA's computing power.  I used MW consumption for an NSA facility recently in the news, an article on BTC hashing power and peta-FLOPS/MW  for the Blue Gene Sequoia.

Yes, the article I used was from 2013, newest I could find in a quick Internet search;
Yes, the hashing power of the BTC network is substantially higher now;
Yes, the Titan outperforms the Sequoia, which was 2013's top supercomputer;

I suppose I could look at it from another direction but really, I have better things to do than try to guess the computing power of a darknet like NSA. 

Peace Out, Be Well, etc. and please do not hesitate flame me in future for being a newbie.  I take a mind over matter approach to that sort of thing.....