TBI director Mark Gwyn said heroin would be the next major drug problem facing Tennessee and also said human trafficking is a problem taking place in McMinnville right now.“You’re probably saying human trafficking is not in McMinnville, but it’s right here,” said Gwyn. “We’re seeing it come from the bigger cities like Atlanta where young girls are brought and then sold, a lot of times over the Internet.”In comments to McMinnville’s Noon Rotary Club on Thursday, Gwyn said Tennessee continues to rank No. 1 or No.