U.S. Air Force Lt. Col. Adam C. Dalson, the 911th Air Refueling Squadron (ARS) commander, gives a thumbs up after parking a KC-135 Stratotanker on the flightline on Seymour Johnson Air Force Base, North Carolina, Dec. 16, 2019. The 911 ARS completed their final mission on a KC-135. (U.S. Air Force photo by Staff Sgt. Mary McKnight)