Agencies may authorize the shipment of UAB by expedited means when:
- (a) Shipment by a lower cost mode cannot deliver the items being shipped by the time the UAB will be needed by the employee and/or the employee's immediate family;
- (b) The employee certifies, and the agency accepts, that expedited shipment of the UAB is necessary to carry out the assigned duties; or
- (c) The agency determines that an expedited shipment is necessary to prevent undue hardship to the employee and/or members of their immediate family.