Senior Airman Alexander Dean performs routine maintenance on an A-10 Thunderbolt II U.S. Air Force Senior Airman Alexander Dean performs routine maintenance on an A-10 Thunderbolt II aircraft assigned to the 354th Expeditionary Fighter Squadron at Bagram Airfield, Afghanistan, on Oct. 16, 2012. Dean is a crew chief with the 455th Expeditionary Aircraft Maintenance Squadron. SHARE IMAGE: Download Image: Full Size (0.02 MB) Photo By: VIRIN: 431600-G-JXE77-037.jpg Photo Gallery