8P000 is a Special Duty Identifier (SDI) for a Defense Courier in the Air Force. The Air Force MOS for this position is 8P000.
The duties of a Defense Courier include:
Safeguarding Armed Forces courier material
Delivering Armed Forces Courier Service material
Supporting the Defense Courier Division’s mission of processing, storing, and transporting classified material
The Defense Courier Division is made up of over 180 active-duty Soldiers, Sailors, and Airmen stationed at 17 locations around the globe. The courier mission is to provide secure, timely, and efficient global distribution of classified and sensitive material for the United States and its allies.