Air Force Lt. Col. Jason Nalepa, an instructor pilot with the 173rd Fighter Wing in Klamath Falls, Ore., readies his aircraft for a training mission in Tucson, Ariz. in support of the 162nd Fighter Wing, Jan. 15, 2020. The F-15s help aspiring F-16 pilots by providing dissimilar air combat training or DACT, which better prepares them for operations in the operational Air Force. ( Air National Guard photo by Master Sgt. Jefferson Thompson)

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