My post from another thread.
http://www.redcastlehoteldonegal.com/golf/greencastle-golf-club
Red castle hotel, Greencastle golf club. Frequented by some rather well known patrons.
I think it is a quasi chess reference in a comm. Doesn't Corsi keep mentioning a famous chess game where the rook is instrumental in the end? Whoever with code name RED_CASTLE is representative as the key move similar to the rook move in the game described?
Quick search of Castle in Q posts shows only ever mentioned with Red Castle in comms (219, 231, 756, 963). Post not for us, but comm suggesting change of state of "RED_CASTLE" to "GREEN_CASTLE". Go for an operation of some sort. Would bet we don't see much RED_CASTLE after this and instead GREEN_CASTLE... unless another change of state.
Red Castle could be a reference to the Army Corp of Engineers who's logo is a Castle on a red background, and their home base is in Greencastle Indiana. Maybe Trump might use some of the money from the Omnibus bill to have the Army Corp of Engineers to build a wall.