Davis–Monthan Air Force Base is a key ACC installation. The 355th Wing (355 WG) provides A-10 Thunderbolt II close air support and OA-10 forward air controllers to ground forces worldwide. The 355 FW is also the host unit, providing medical, logistical, mission and operational support to all assigned units. The 355 FW is also the sole formal training unit for the A-10 aircraft, providing initial and recurrent training to all U.S. Air Force A-10 and OA-10 pilots, to include those in the Air Force Reserve Command (AFRC) and the Air National Guard (ANG). The 355th is also ACC's executive agent for INF and START treaty compliance.
One of the wing's tenant units, the 55th Electronic Combat Group (55 ECG), is a geographically separated unit (GSU) of the 55th Wing (55 WG) at Offutt AFB, Nebraska and is an ACC unit tasked to provide offensive counter-information and electronic attack capabilities in support of U.S. and Coalition tactical air, surface, and special operations forces with its Lockheed EC-130H Compass Call aircraft and employing the EC-130H in tactical air operations in war and other contingencies worldwide. The 55 ECG also provides initial and recurrent training to all EC-130H Compass Call pilots, navigators and air crew.