Preflight Check An airman performs preflight checks aboard a KC-135 Stratotanker while supporting Operation Inherent Resolve at Al Udeid Air Base, Qatar, April 19, 2021. SHARE IMAGE: Download Image: Full Size (0.22 MB) Tags: Air Force Photo By: Air Force Master Sgt. Joey Swafford VIRIN: 210419-F-QN515-0053C.JPG Photo Gallery