There was without question all kinds of knowledge by EVERYONE that the place was under violent attack. No code words or messages need be sent when the Whitehut, Pentagon, and various operating centers, including onboard carriers, throughout the world were watching events unfold in realtime in video, sound, radio comms, emails, etc.
OBAMA WENT TO BED TO GO TO LAS VEGAS THE NEXT DAY!!!
While all the action was taking place Obama went to bed. I have no doubt he was HAPPPY that things went against the US over there. Obama HATES this country.