The Greatest American Hero
Operation Spoilsport
S2 E2:
The aliens return and tell Ralph and Bill that they have to stop World War III when they are told that a failsafe system which will launch an attack on the other side if the country's been decimated has been activated. So they have to stop it. But unfortunately they discover someone on their side is behind the whole thing.
Starring
Michael Paré, John Anderson, Robin Riker