EMBED >More News Videos Authorities announced more than 400 arrests as a result of a months' long sting operation dubbed 'Operation Traveling Circus.'

HOUSTON (KTRK) -- Authorities have charged a pair in connection with an alleged sex crime ring.Bruce Wayne Wallis and Tracie Tanner are charged with aggravated promotion of prostitution. Wallis is also charged with engaging in organized criminal activity.Prosecutors say Wallis ran a total of six brothels, with at least 20 women working for him as prostitutes. They would reportedly pay him $400 a week.Wallis is a pilot for United Airlines, but has been grounded at this time.United Airlines issued the following statement: "We hold our employees to the highest standards and are assisting the authorities in this matter. We have removed the employee from his flying duties."Earlier this month, authorities announcedin a Houston-area sex trafficking sting.