A leader of a ring that staged auto accidents in order to file phony insurance claims was sentenced in Los Angeles federal court to four years in prison. U.S. District Judge Edward Rafeedie imposed the sentence on Gregory Benson, 41, after he pleaded guilty to two counts of conspiracy and mail fraud. Assistant U.S. Atty. Terree A. Bowers said that Benson was the primary driver in the ring. Operating out of therapy clinics and medical centers where accident participants were sent for "treatment," the 13-member ring filed hundreds of phony insurance claims through the mails, "probably amounting to millions of dollars," Bowers said.