Hickam Air Force Base is a United States Air Force (USAF) installation, named in honor of aviation pioneer Lieutenant Colonel Horace Meek Hickam. The installation merged in 2010 with Naval Station Pearl Harbor to become part of the newly formed Joint Base Pearl Harbor–Hickam, on the island of Oʻahu in the State of Hawaiʻi. The base neighbors Daniel K. Inouye International Airport and currently shares runways with the airport for its activities and operations. Major units Hickam is home to the 15th Wing (15 WG) and 67 partner units including Headquarters of Pacific Air Forces (PACAF), Hawaii Air National Guard and the 154th Wing (154 WG) of the Hawaii Air National Guard. The Air Mobility Command's 515th Air Mobility Operations Wing (515 AMOW) provides tactical and strategic airlift within the Pacific region. 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. 15th Operations Group (Tail Code: HH) 15th Operations Support Squadron 25th Air Support Operations Squadron 535th Airlift Squadron (C-17 Globemaster III) 65th Airlift Squadron (C-37B) 19th Fighter Squadron (F-22 Raptor) 15th Maintenance Group 15th Medical Group 15th Wing Staff Agencies The 535th Airlift, 96th Air Refueling, and 19th Fighter Squadrons are each hybrid units joined with the Hawaii Air National Guard's 204th Airlift, and 199th Fighter Squadrons, respectively. These units are structured according to the USAF Total Force Integration (TFI) concept, and as such have both an active duty Commander and a Guard Commander. They share missions as well as equipment. Major Tenant Units 154th Wing Hawaii Air National Guard 515th Air Mobility Operations Wing History Origins In 1934, the Army Air Corps saw the need for another airfield in Hawaii when Luke Field on Ford Island became too congested for both air operations and operation of the Hawaiian Air Depot. of land and fishponds adjacent to John Rodgers Airport and Fort Kamehameha were purchased by the War Department from the Bishop, Damon and Queen Emma estates for a new