Caddo Shreveport Narcotics Unit Fights To Control Synthetic Marijuana [AUDIO]Caddo Shreveport Narcotics Unit Fights To Control Synthetic Marijuana [AUDIO]Caddo Shreveport Narcotics Unit Lt. Carl Townley joined us on KVKI this morning to talk about his years of working to keep drugs off the streets.Robert and ErinRobert and Erin