Terms of Service and Privacy PolicyThe last MC-12W Liberty turboprop surveillance aircraft under U.S. Air Force Special Operations Command’s (AFSOC) umbrella have been retired. The 137th has also been working closely with the active-duty 492nd Special Operations Wing at Davis-Monthan Air Force Base in Arizona to train the initial cadre of OA-1K pilots. A modified Beechcraft King Air 350ER twin-engine turboprop, the MC-12W first entered Air Force service back in 2009. Amid the scaling back of U.S. operations in Iraq and Afghanistan in the early to mid-2010s, regular Air Force units stopped flying the MC-12W. The Oklahoma Air National Guard’s 137th Air Refueling Wing transitioned to the 137th Special Operations Wing in 2015, and subsequently received 13 MC-12Ws.