Crew Chief A 4th Expeditionary Fighter Squadron F-35A Lightning II pilot meets a crew chief in the U.S. Central Command area of operations, April 26, 2019. This was the first U.S. Air Force F-35 sortie operated in the Middle East. SHARE: Download: Full Size (0.75 MB) Tags: Air Force Credit: Air Force Staff Sgt. Chris Thornbury VIRIN: 190426-F-XK483-1194C.JPG Photo Gallery