Thieves stole computer equipment and files from the Arizona office of a Tricare contractor Dec. 14, according to the Tricare Management Activity. The contractor, TriWest Healthcare Alliance Corp., provides services to military members, their families and retirees, living mostly in the central and western United States. Data files embedded within equipment missing from the Phoenix facility “contained sensitive and personal Tricare Prime beneficiary information, including claims history and Social Security numbers,” according to documentation provided by TriWest. The Defense Criminal Investigative Service, FBI and other law enforcement organizations are investigating the incident. TriWest covers Tricare beneficiaries living in Colorado, Idaho, Iowa, Kansas, Minnesota, Missouri, Montana, Nebraska, North Dakota, South Dakota, Utah, Wyoming, Arizona, New Mexico, Nevada, and western Texas, according to the TMA. Beneficiaries can call 1-888-339-9378 for more information.