TriWest Healthcare Alliance is fighting for its life, hoping to regain a contract with Tricare to provide health insurance to military personnel, reported USA Today. After filing a protest with the Government Accountability Office in March, in which TriWest said the Tricare contract evaluation process was "flawed and unfair," it now has launched a widespread ad campaign criticizing UnitedHealth, which won the $17 billion contract. TriWest placed ads in several national publications, including USA Today, and bought billboards at the Pentagon subway station that list UnitedHealth's past lawsuits.