Captain Xiana chose Greenville for her pet experiment. She chose Greenville because it served as a major hub for truck drivers and therefore, even though Greenville was small, there were always new people for her experiments. She arranged to drop something into the Greenvilles water supply. The chemical would genetically alter the people in the community causing all the women to act more like men while causing all the men to act more like women. This would be a gradual change and the chemical would also alter everyone's thinking to make them accept these changes as normal.
This transformation would not alter anyone physically. Women would still have breasts and men would not. However, the mental changes would be such that women would start working out and building up their muscles instead of the men. New people in town would be shocked to see a town full of muscle bound women walking around topless while their petite little boy friends walked around in high heels. New people would be shocked until they drank some of Greenville's water, then they too would start changing and accepting it as normal.
Bob was a big burly man. He would have been considered a bear if he had been gay but he was completely a redneck, beer drinking, trash talking womanizing, heterosexual. He complained when his boss gave him a delivery job in Greenville. He told his boss that those queers gave him the creeps. But Bob took the job and drove his truck to Greenville.