"Training will focus on air sovereignty, air interdiction, air-to-ground integration, air mobility operations, aeromedical evacuation, cyber defense, and personnel recovery", the Air Force said at the time.
U.S. Air Forces in Europe (USAFE), the top Air Force command in the region, has confirmed that a U.S. service member was involved in the incident, but has no made an official announcement as to their status.
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The accident took place during the multinational military exercise titled "Clear Sky-2018".
The crash took place during joint military training between the US military and Ukrainian counterparts, known as Clear Sky 2018.
At the same time, the US Air Force said in a press release that one American service member was involved in the crash.
US assets participating include six F-15C Eagles from the 144th Fighter Wing, based at Fresno Air National Guard Base, Calif.; an F-15D from the 48th Fighter Wing, at RAF Lakenheath, England; and C-130Js from the Guard's 146th Airlift Wing, operating out of Vinnytsia Air Base. "It is now under investigation and we will continue to provide more information as it becomes available".