Lee, Christopher. War In Space. Hamilton, 1986, pp. 10-11.

"In America, a 'super shuttle' has been designed that could take off like a conventional plane, fly to a high altitude and then, if necessary, boost itself into orbit - on board would be the Commander-in-Chief, the President." (Lee 10-11) 

So, the President has Stealth ASPEN command post from which WW3 will be fought. This is the plan for WW-3. 911 has shown the limitations of this strategy. It showed that commando attack can take out the city centers of American cities using tactical nuclear weapons. This attack carried out by proxies would have plausible deniability leaving the attacked nation unable to respond with certainty.