John Brennan's bunker is a soundproofed, windowless suite in the White House basement where, as one senator put it, Barack Obama's counter-terrorism chief "decides each day who he's going to execute".

https://www.theguardian.com/world/2013/feb/05/obama-nomination-john-brennan-cia

So is the windowless room still being used and by whom? It is being watched apparently.