field level/back shop maintenance for 110 A-10C, and intermediate field level/back shop maintenance for an additional 14 EC-130H, 1 TC-130H, 8 HH-60H, and 6 HC-130J combat-ready aircraft. The 355 MXG has over 1,700 assigned personnel, ensures quality of on- and off-equipment aircraft maintenance, and executes an annual O&M budget of $72.2M. 355th Aircraft Maintenance Squadron 355th Component Maintenance Squadron 355th Equipment Maintenance Squadron 355th Medical Group (355 MDG) – The 355th Medical Group was established in 1955 as the 355th USAF Infirmary at McGhee Tyson AFB, Tennessee. After several redesignations, it was activated at Davis–Monthan AFB as the 355th Medical Group in 1992. The 355th Medical Group ensures combat medical readiness of all operational and support units home-based at Davis–Monthan AFB for global contingencies. With an authorized staff of 407 and a resource allocation totaling $26 million, the 355 MDG ensures that warriors at Davis–Monthan AFB are medically fit-to-fight. In addition to training and equipping/manning 25 mobility teams, the 355 MDG also promotes the health and wellness of the Davis–Monthan AFB community by meeting the health care needs of over 54,000 eligible DoD beneficiaries in southern Arizona. 563rd Rescue Group The 563rd Rescue Group is part of the 355th Wing. It includes the following squadrons: 48th Rescue Squadron (Pararescue) 55th Rescue Squadron (HH-60G Pavehawk) 79th Rescue Squadron (HC-130J) 563rd Operations Support Squadron 563rd Maintenance Squadron 923rd Aircraft Maintenance Squadron Associate / unit-equipped units 924th Fighter Group (924 FG) The 924 FG of the Air Force Reserve Command (AFRC) was reactivated in 2011 and initially assigned to Davis–Monthan AFB as an "associate" unit to the 355 FW flying the A-10 aircraft. As part of the Air Force Reserve Command, it is also a geographically separated unit (GSU) of AFRC's 944th Fighter Wing (944 FW) at Luke AFB, Arizona. Like the 355 FW, the 924 FG currently flies the same Fairchild Republic A-10 Thunderbolt II close air support aircraft. The 924 FG consists of the 47th Fighter Squadron (A-10C), 924th Maintenance Squadron, 924th Operational Support Flight. Between October 2013 and March 2014, the 924 FG transitioned from being a "classic" associate unit when it gained 28 A-10 aircraft of its own from Barksdale AFB, Louisiana. The 924th is now part of the Total Force Enterprise, and is the only unit-equipped both active and classic associate fighter group in Air Force Reserve Command's inventory. With oversight of the 47th Fighter Squadron, 924th MS,