States Air Force Pacific Air Forces (PACAF) Seventh Air Force Headquarters Seventh Air Force 51st Fighter Wing Headquarters 51st Fighter Wing 51st Operations Group 25th Fighter Squadron – A-10C Thunderbolt II 36th Fighter Squadron – F-16C/D Fighting Falcon 51st Operations Support Squadron 51st Mission Support Group 51st Civil Engineer Squadron 51st Communications Squadron 51st Force Support Squadron 51st Logistics Readiness Squadron 51st Security Forces Squadron 51st Maintenance Group 51st Aircraft Maintenance Squadron 51st Maintenance Operations Squadron 51st Maintenance Squadron 51st Munitions Squadron 51st Medical Group 51st Aerospace Medicine Squadron 51st Bioenvironmental Engineering Squadron 51st Dental Squadron 51st Medical Support Squadron 51st Medical Operations Squadron 607th Air Operations Center 621st Air Control Squadron 607th Air Support Operations Group 607th Air Communications Squadron 607th Air Support Squadron Fifth Air Force 18th Wing 18th Operations Group 33rd Rescue Squadron Detachment 1 (GSU) – HH-60G Pave Hawk Air Combat Command (ACC) Sixteenth Air Force 9th Reconnaissance Wing 9th Operations Group 5th Reconnaissance Squadron (GSU) – U-2S Dragon Lady 480th Intelligence, Surveillance and Reconnaissance Wing 694th Intelligence, Surveillance and Reconnaissance Group (GSU) 6th Intelligence Squadron 303rd Intelligence Squadron 694th Intelligence Support Squadron Air Mobility Command (AMC) United States Air Force Expeditionary Center 515th Air Mobility Operations Wing 515th Air Mobility Operations Group 731st Air Mobility Squadron (GSU) United States Army US Army Pacific (USARPAC) Eighth Army 94th Army Air and Missile Defense Command 35th Air Defense Artillery Brigade – MIM-104 Patriot 3rd Battlefield Coordination Detachment Republic of Korea Air Force Air Force Operations Command () Air Defense Missile Command () Air Defense Control Command () 1st Master Control and Reporting Center(1MCRC) () Air Force Operation Information & Communication Wing () Air Intelligence Wing (AIW) () Amenities Life In Osan Most U.S. military members assigned to Osan AB serve a 1-year unaccompanied tour. If they elect to participate in the Korea Assignment Incentive Program, their tour is extended by one year, they receive a taxable bonus of $300 per month, but they lose the ability to have assignment preference due to a short tour and lose short tour credit. Roughly five percent of the military authorizations at Osan AB are designated as command-sponsored two-year accompanied tours, typically for senior ranking personnel and/or jobs which requires a tour longer than 12 months, due to military necessity. If an individual is placed in one they may bring their families at government expense. Housing on-base, even for command sponsored