Home Law GAO Sustains Challenge to Agency’s Cost Realism Evaluation; GAO B-415633.3, Valkyrie Enterprises... LawNewsProtestsResource Library GAO Sustains Challenge to Agency’s Cost Realism Evaluation; GAO B-415633.3, Valkyrie Enterprises LLC August 5, 2019 81 mrmohock | Shutterstock You must be a Paid or Free Trial Member to Access this Content. Paid members, please login to view your news subscription(s). RELATED ARTICLESMORE FROM AUTHOR Law GAO Finds Agency Delayed Corrective Action, Awards Protester Costs Law GAO Finds Manufacturer, Who Didn’t Submit a Proposal, Lacked Standing Law Protest Was Timely But Protester Wasn’t an Interested Party