This is the Conductor and the last passenger to have their ticket punched on the Amtrak Desert Wind. Although the Desert Wind is not supposed to pick up passengers in Fullerton, I think that is where this person did board.
The photos in this slide show were taken in the mid-1990's by Steve Grande on his Amtrak travels throughout the nation. The size of the photos is purposely smaller as disk space was expensive and download speeds were slower at that time.