A U.S. Army crew chief aboard a CH-47 Chinook helicopter mans an M-240B machine gun after an extraction operation in the Jaghatu district, Wardak province, Afghanistan, Aug. 21, 2010. The soldier is assigned to the 1st Battalion, 503rd Infantry Regiment, 173rd Airborne Brigade Combat Team. A U.S. Army crew chief aboard a CH-47 Chinook helicopter mans an M-240B machine gun after an extraction operation in the Jaghatu district, Wardak province, Afghanistan, Aug. 21, 2010. The soldier is assigned to the 1st Battalion, 503rd Infantry Regiment, 173rd Airborne Brigade Combat Team. SHARE: Download: Full Size (7.19 MB) Tags: photo essays Credit: VIRIN: 248837-U-VGN02-110.jpg Photo Gallery