Two sisters, one 5 years old and the other 3 months old, were rescued in Denver by undercover agents during this year's FBI-led sting operation against sex traffickers, officials said. The alleged trafficker, a friend of the children's family, made a deal to sell them for sex for $600, the FBI said. The friend communicated with an undercover agent, the FBI said in announcing details of Operation Cross Country XI. 82 other juveniles were rescued during last week's nationwide sweep. Some 120 people were arrested. On October 13, the second day of the operation, a minor was rescued by the FBI in El Paso, Texas, when a 16-year-old female victim was advertised online for entertainment," officials said. The girl was accompanied by a 21-year-old female who offered an undercover agent sexual intercourse with both her and the underage victim for $200. According to the FBI report, the woman as well as the driver, another female, who took the minor and 21-year-old to the undercover officer's location, were arrested. Among the recovered victims across the country was one from Russia. Local and state agencies were involved in the operation, as were police as far away as the Philippines and Thailand. The average age of the victims recovered from this year's operation is 15, the FBI said.