Those inside the Pentagon’s Executive Support Center (ESC) feel and hear the impact when the building is hit, yet supposedly do not realize what has happened. Victoria Clarke, the assistant secretary of defense for public affairs, who is in the ESC at this time, calls the center “the Pentagon’s war room, with instant access to satellite images and intelligence sources peering into every corner of the globe.” She describes it as “the place where the building’s top leadership goes to coordinate military operations during national emergencies.” In it with her are Stephen Cambone, Donald Rumsfeld’s closest aide, and Larry Di Rita, Rumsfeld’s personal chief of staff. They’d been discussing how to go about getting every plane currently in the air back on the ground when, according to Clarke, “we felt a jarring thump and heard a loud but still muffled explosion. The building seemed to have shifted.” Yet, despite all the ESC’s resources, they supposedly do not initially realize exactly what has happened. Clarke says to the others, “It must have been a car bomb.” Di Rita replies, “A bomb of some kind.” But one unnamed staffer who frequently uses the ESC for meetings points to the ceiling and says, “No, it’s just the heating and cooling system. It makes that noise all the time.” Clarke later claims, “The notion of a jetliner attacking the Pentagon was exactly that unfathomable back then. Our eyes were glued to television screens showing two hijacked planes destroying the World Trade Center and it still didn’t occur to any of us, certainly not me, that one might have just hit our own building.” Clarke guesses aloud that the noise was something other than the heating and cooling system. In the ensuing minutes, she and the others with her will scramble “for information about what exactly had happened, how many were hurt or killed, and [analyze] what we could do to prevent further attacks.” Yet, she will later claim, it is only when Donald Rumsfeld comes into the ESC at 10:15 a.m., after having gone to the crash scene, that they receive their first confirmation that a plane has hit the Pentagon (see (10:00 a.m.-10:30 a.m.) September 11, 2001). [Clarke, 2006, pp. 219-221] Those inside the National Military Command Center (NMCC), located next door to the ESC, supposedly do not feel the impact when the Pentagon is hit, and one officer there claims he only learns of the attack from television reports (see Shortly After 9:37 a.m. September 11, 2001). [CNN, 9/4/2002; American Forces Press Service, 9/7/2006; Cockburn, 2007, pp. 5] But Secretary of Defense Rumsfeld, who is in his office about 200 feet away from the ESC, feels the building shake due to the explosion. After seeing nothing out of his window, he immediately dashes outside to determine what has happened (see 9:38 a.m. September 11, 2001). [WBZ Radio 1030 (Boston), 9/15/2001; Parade, 10/12/2001; Washington Post, 1/9/2002; 9/11 Commission, 3/23/2004 ]