In addition, Hickam supports 140 tenant and associate units.
The 15th Wing is composed of four groups each with specific functions. The 15th Operations Group (15 OG) controls all flying and airfield operations. The 15th Maintenance Group (15 MXG) performs aircraft and aircraft ground equipment maintenance. The 15th Mission Support Group (15 MSG) has a wide range of responsibilities but a few of its functions are Security, Civil Engineering, Communications, Personnel Management, Logistics, Services and Contracting support. The 15th Medical Group (15 MDG) provides medical and dental care.