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Col. Christopher Sage, 4th Fighter Wing commander, walks through a pre-flight inspection of an F-15E Strike Eagle prior to conducting his final flight as wing commander, June 14, 2018, at Seymour Johnson Air Force Base, North Carolina. Sage has accumulated more than 4,000 flying hours in his career, including more than 1,000 combat hours in five different operations. (U.S. Air Force photo by Staff Sgt. Brittain Crolley)