Hi Nostradamus and thank you for the welcome!
The reason my answer was short is that this document "AIRCRAFT PIRACY (HIJ ACKING) AND DESTRUCTION OF DERELICT AIRBORNE OBJECTS" explains the change of NORAD interception procedure so that any future interceptions required the advise and approval of the Department of Defense, in other words Donald Rumsfeld.
The instructions cover everything from minor emergencies to hijackings and strips comanders of the authority to act in a case of a hijacking, something which they had been doing very well for many years previously without the aid of the Secretary of Defense. (A civilian post!)
I do not know for sure if it was Cheney and Rumsfeld who specifically requested the changes, that cannot be proven but I wouldn't be surprised in the slightest.