If you go to the National Institute of Standards and Technology website (NIST.gov) today, you will see a "closed" notice:
Of course, the website isn't really "closed": in order to show you the page above, NIST still has to have an operational web server. It is just that they changed the server to show the above instead of the normal page. Like the closing of the WWII memorial, this is just shutdown theater.
MORE: If you need NIST documents, you can still get them: just go to the wayback machine instead of NIST. NIST's documents on computer security, for example, are found here.