9th Maintenance Group The 9th Maintenance Group has four squadrons totaling more than 1,150 personnel. It is responsible for providing worldwide maintenance support for the U-2, T-38 and RQ-4 aircraft, which fulfill the global reconnaissance missions directed by the National Command Authorities. It also supports worldwide taskings for operating locations and other Joint Chiefs of Staff requirements. The group includes the 9th Aircraft Maintenance Squadron, 9th Maintenance Operations Squadron, 9th Maintenance Squadron and the 9th Munitions Squadron. The 9th Maintenance Group supports the wing mission by providing spare parts, off-equipment maintenance and mass ammunition production training through the Air Force Combat Ammunitions Center.