Rec. 1: The DoD OIG recommended that the Defense Pricing and Contracting Principal Director review the Defense Federal Acquisition Regulation Supplement and Defense Federal Acquisition Regulation Supplement Procedures, Guidance, and Information to determine whether current policy adequately addresses when cost analysis should be required by contracting officials to determine price reasonableness for sole-source spare parts not subject to Truth in Negotiations Act. If the Principal Director determines that current policy is not sufficient, the Principal Director should initiate actions to revise and update policy and guidance.