of the KC-10 crews and contribute 50 percent to the maintenance force. Air Force Reservists also contribute about 13 percent of total KC-135 aerial refueling requirements. In another alignment with AMC, more than 9,100 Air Force Reservists train in the C-130 Hercules theater airlift mission in a variety of aircrew, aircraft maintenance and support skills as both stand alone AFRC units and in "Associate" arrangements with Regular Air Force and Air National Guard C-130 units. In wartime, AFRC provides 23 percent of Air Force's total C-130 theater airlift force, with nearly half of the Air Force Reserve's airlift units flying their own unit-assigned C-130 Hercules aircraft, several of which have now integrated Active Associate units from the Regular Air Force. The C-130's speed, range, load-carrying characteristics and capability to operate under difficult terrain conditions make it an invaluable and versatile aircraft, strong enough to deliver its cargo on unimproved landing strips. Other AMC-aligned AFRC missions involve aeromedical evacuation and special air support operations. Air Combat Command (ACC) F-22A Raptor air dominance fighters, F-16 Fighting Falcon and F-15E Strike Eagle multipurpose fighters, A-10 Thunderbolt II ground attack aircraft, MQ-1 Predator remotely-piloted aircraft are jointly operated by ACC active duty personnel and AFRC aircrews via Associate units. Several AFRC Air Operations Centers (AOCs) also operate as stand alone units or in associate augmentation to ACC, AMC, Pacific Air Forces (PACAF), U.S. Air Forces in Europe (USAFE) and U.S. Air Forces Central (AFCENT) AOCs operating the AN/USQ-163 Falconer AOC weapons system. In associate programs with the Air Education and Training Command (AETC), AFRC support undergraduate pilot training by providing instructor pilots in the T-6 Texan II, T-38 Talon and T-1 Jayhawk. AFRC Space Operations associate units aligned with the United States Space Force also operate Defense Meteorological Satellite Program (DMSP), Defense Support Program (DSP) and Global Positioning System (GPS) Satellites as well as various cyber warfare systems. Unit Program with AFRC-owned Aircraft AFRC also operates numerous F-16 and A-10 aircraft in stand-alone AFRC fighter wings that are operationally aligned with the Air Combat Command (ACC). AFRC's HC-130 and HH-60 combat search and rescue (CSAR) aircraft are also assigned to stand-alone flying units that are operationally aligned with ACC. A single AFRC bomb wing is equipped with the B-52 and is operationally aligned with Air Force Global Strike Command (AFGSC). AFRC also operates stand-alone C-5, C-17, C-130, C-40 and KC-135 units that are operated