He was probably told to stay right there until we can figure out where we want to take you and our pilots are ready to take off. They didn't want him to move until they could give him the best protection possible.
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I have always thought that what you said was part of Andy Card's words to the President.
The 'ratics really do not know how to respond to a national emergency. They only know how to go for the imature playground taunt.
Much more will come out as the years pass but security of our President and the chain of command is just too important to violate in these times in particular.