A McDonnell-Douglas KC-10 'Extender' on display at the ND Centennial Air Show at the old Hector Airport terminal, Saturday 8/19/1989.

The KC-10A 'Extender' features the Advanced Aerial Refueling Boom (AARB) and additional fuel tanks located in the baggage compartments below the main deck. The extra tanks increase the KC-10's fuel capacity to 356,000 lbs, nearly double the KC-135's capacity. The KC-10 has both a centerline refueling boom, and a drogue-and-hose system on the starboard side of the rear fuselage. The KC-10 boom operator is located in the rear of the aircraft with wide window for monitoring refueling. The operator controls refueling operations through a digital fly-by wire system. The KC-10's hose-and-drogue system allows refueling of Navy, Marine Corps, and most allied aircraft, all in one mission. -wiki