on 1 October 1993. The wing performs combat training with the Boeing B-1B Lancer bomber and is the USAF's premier operational B-1B unit with 36 aircraft. The wing consists of these groups: 7th Operations Group (Tail Code: "DY") - Responsible for executing global conventional bombing directed by proper command authority, it is the Air Force's largest B-1 operations group comprising 36 B-1s. 28th Bomb Squadron (B-1B) (blue/white chex tail stripe) 9th Bomb Squadron (B-1B) (black tail stripe) 7th Operations Support Squadron 7th Mission Support Group 7th Maintenance Group 7th Medical Group The 317th Airlift Wing (317 AW), an Air Mobility Command tenant unit, performs Lockheed Martin C-130J Super Hercules airlift missions with 28 aircraft assigned. The wing is now the largest C-130J unit in the world. The 317th AW consists of these squadrons: 39th Airlift Squadron "Trail Blazers" (C-130J) ("Dyess" Texas state flag tail stripe) 40th Airlift Squadron "Screaming Eagles" (C-130J) ("Dyess" Texas state flag tail stripe) 317th Maintenance Squadron 317th Aircraft Maintenance Squadron 317th Maintenance Operations Squadron (inactivated June 2013) 317th Operations Support Squadron Dyess AFB is also home to several tenant units, including Air Force Office of Special Investigations Detachment 222. Based units Flying and notable nonflying units based at Dyess Air Force Base: Units marked GSU are geographically separate units, which although based at Dyess, are subordinate to a parent unit based at another location. United States Air Force Air Force Global Strike Command (AFGSC) Eighth Air Force 7th Bomb Wing (host wing) 7th Operations Group 7th Operations Support Squadron 9th Bomb Squadron – B-1B Lancer 28th Bomb Squadron – B-1B Lancer 7th Mission Support Group 7th Civil Engineer Squadron 7th Contracting Squadron 7th Communications Squadron 7th Force Support Squadron 7th Logistics Readiness Squadron 7th Security Forces Squadron 7th Maintenance Group 7th Aircraft Maintenance Squadron 7th Component Maintenance Squadron 7th Equipment Maintenance Squadron 7th Munitions Squadron 7th Medical Group 7th Aerospace Medicine Squadron 7th Medical Operations Squadron 7th Medical Support Squadron Air Mobility Command (AMC) Eighteenth Air Force 317th Airlift Wing 317th Operations Group 39th Airlift Squadron – C-130J Super Hercules 40th Airlift Squadron – C-130J Super Hercules 317th Operations Support Squadron 317th Maintenance Group 317th Aircraft Maintenance Squadron 317th Maintenance Squadron Air Combat Command (ACC) US Air Force Warfare Center 53rd Wing 53rd Test and Evaluation Group 337th Test and Evaluation Squadron (GSU) – B-1B Lancer 53rd Test Management Group 29th Training Systems Squadron (GSU)– B-1B