The scenario... You somehow obtain NORAD's classified number and a valid password. You enter the system under the pretense of LTC Robert S. Lewis but are granted limited access because your call is not traced back to your registered point of origin (SEE BELOW).
You later fail to follow security clearance procedure alerting NORAD to a breech in security. DEFCON 4 is ordered as an internal security measure but is misinterpreted by the Soviets who also follow suit. It's downhill from there on out. Witness the events that lead up to the final confrontation...WWIII!