|Played By:||Andy Thompson|
Calvin is a mailman from Indiana, who regularly delivered mail to Joe's Barbershop and occasionally listened to Joe's stories about the Stargate and SG-1. He at one point suggested to Joe that he ask the US Air Force about it all, however Joe in fear of the NID rejected his suggestion.
Calvin eventually started to believe, like the other people of Indiana, that Joe had started to lose it.
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