Towards the end of the lengthy end credits of 'Superman: The Movie', pay attention to the cast of characters. They make mention of certain areas of the film, such as 'Superman's First Night' and 'Golf Course'. The 'golf course' scene (which takes place after the first missile control scene) was originally intended for the film but was edited from the theatrical version, but only restored for the expanded cut. The 'agent' mentioned in the 'golf course' scene is the one who alerts the president to trouble (his key line is 'the Pentagon's calling, sir'

....that's the agent. This was a character in the expanded version, as it was edited out of the theatrical cut.
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