Cockpit Duty Air Force KC-135 Stratotanker pilots perform a pre-flight check prior to an in-flight refueling mission over Afghanistan, May 28, 2018. Air Force Photo by Staff Sgt. Corey Hook SHARE: Download: Full Size (1.91 MB) Tags: Resolute Support, Central Command, Centcom, Air Force, training, Airmen Credit: Staff Sgt. Corey Hook VIRIN: 180528-F-ZU607-0148A.JPG Photo Gallery