My guess:
5th floor of a federal court house where some sealed action is taking place
and /ourguys/ really, REALLY don't want any reporters overhearing the proceedings.
Note: Flynn responses by Mueller prosecution due at federal court 2PM EST today. Could it be this?
Fri, Dec 14 –– “302” forms for FBI 8/22/17 interviews of Flynn, and any relevant memoranda, and government reply to defendant’s sentencing memo, must be filed with the court by 3 PM. –– https://twitter.com/Techno_Fog/status/1072999795155816448 (Pacer sauce)