COLUMBIA, Mo. (KMIZ) A volunteer firefighter for the Tuscumbia Fire Department has been charged with two child sex crimes. Izak Lachance, 25, of Eldon, was charged on Wednesday in Morgan County with second-degree child sex trafficking and child enticement. He is being held at the Morgan County Jail on a $250,000 bond. A court date has not been scheduled. The probable cause statement says the Morgan County Sheriff’s Office on Feb. 23 received a c…