It clearly states "unless there is an ad hoc exam or a stop by another regulatory agency, the shipment will proceed to delivery." So unless some other entity stops the delivery, the delivery will proceed to delivery. Duh. Post office speak for "Hey, we're bringing it to you and unless something happens, we're bringing it to you." Kinda' a pointless by CYA statement.
"OK folks, we're planning on the sun rising tomorrow and unless there is a cataclysmic Earth destroying event overnight that obliterates our planet, we're planning on the sun rising tomorrow." OK, well... yeah.
Just be patient.