Carter.
I am sure the NSA is shutting down their Crays right now. LOL!
As a matter of fact, the only Cray 'supercomputer,' I've seen was on display in the lobby of a building on an Air Force base here; not plugged in of course. I believe it was a Cray YMP-2. State of the art circa 1989 or so.
PS To all of the other posters here who are knee-jerking themselves over this; what exactly about the word warrantless do you not understand? Get a warrant (FISA allows 72 hour retroactive monitoring-warrants) or have congress change the law. It ain't rocket science folks.