CASING COVER U.S. Marine Corps Command Sgt. Maj. Bryan Link stands on machine gun casings and links at a Forward Operating Base in the village of Darrah-I-Bum, Badghis province, Afghanistan, Jan. 5, 2011. He is the command sergeant major for Special Operations Task force-West. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 743992-B-XYS06-825.jpg Photo Gallery