In October 1988, the Star Trek production team started rolling in Yosemite National Park. We catch up with Dan Madsen, the head of the official fan club, who was in regular contact with director William Shatner and well aware of the anticipation - and anxiety - among fans about the next Trek feature film. We cover everything from Levi's to marshmallows to purple horses on this week's episode of The Trek Files. Document and additional references: Star Trek V call sheets - 1988 The Trek Files Season 12 on Memory Alpha All episodes and documents: The Trek Files on Memory Alpha Visit the Trekland site for behind-the-scenes access and exclusive merchandise.