U.S. Air Force Staff Sgt. Jose A. Reyes, a 911th Air Refueling Squadron (ARS) dedicated crew chief, squats near a KC-135 Stratotanker, during pre-flight checks before takeoff from Seymour Johnson Air Force Base, North Carolina, Dec. 12, 2019. The 911 ARS prepared for their final mission on a KC-135 Stratotanker. (U.S. Air Force photo by Staff Sgt. Mary McKnight)