I am aware that JCS meets in the Pentagon, what is the point you are attempting to make? The fact is no troops are trained, quartered, & mobilized for war in the Pentagon. The Pentagon is a civilian location. In the U.S. civilians run the military (in other words the chiefs answer to their bosses, the secretaries, who answer to their boss the SecDef.)

Tora Bora is where the Taliban trained, mobilized, & quarter troops (even if they were irregulars.) This is the distinction between a military facility & a civilian facility that happens to deal with military affairs.