; (D) the maintenance of records on the use of such funds to facilitate future audits and investigations of the use of such funds; (E) the investigation of overpayments such as duplicate payments or duplicate billing and any potential unethical or illegal actions of Federal employees, contractors, or affiliated entities and the referral of such reports, as necessary, to the Department of Justice to ensure further investigations, prosecutions, recovery of further funds, or other remedies; (F) the monitoring and review of all military and nonmilitary activities funded by such funds