Voice-over narration begins before the credits:
The program you are about to see is based on a war game developed with the help of military experts and advisers. Its purpose is to inform, not to alarm. You will witness a series of events reported by the evening news on television, a series of events that could lead us to the brink of World War 3. At this moment, flying over the United States is a military airborne command plane. It is a communications outpost for the president and strategic air command. It is capable of transmitting orders to U.S. forces across the world during a nuclear confrontation. It's code name is "Looking Glass". [sound of ticking...]
Googlevideo has it online:
I'm having some trouble finding reviews of this. MSN has an overview.