U.S. Air Force Lt. Col. Joe Smarsh, a 77th Air Refueling Squadron pilot, completes pre-flight checks on a KC-135 Stratotanker on the flightline at Seymour Johnson Air Force Base, North Carolina, Dec. 5, 2019. Smarsh has been working with the KC-135 for 32 years. (U.S. Air Force photo by Staff Sgt. Mary McKnight)