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An F-16 Fighting Falcon from the 138th Fighter Wing, Tulsa Air National Guard Base, Okla., flies behind a KC-135R Stratotanker April 25, 2019. The Stratotanker, from the 507th Air Refueling Wing at Tinker Air Force Base, Okla., refueled four 138th FW F-16 Fighting Falcons during flight operations over Kansas. (Courtesy photo by Mike Killian)