40 U.S.C. § 17308

For purposes of the propriety of an act or omission related to a shipment to which the regulations prescribed under section 17302 of this title apply, every officer and employee of the Federal Government and every individual acting on behalf of a wholly owned Government corporation who makes a shipment of valuables in good faith under, and substantially in accordance with, the regulations is deemed to be acting in the faithful execution of the officer’s, employee’s, or individual’s duties of office and in full performance of any conditions of the officer’s, employee’s, or individual’s bond and oath of office.