U.S. Army 1st Sgt. Mark Sanchez goes over proper M-16 A-2 procedures with participants of the 75th Joint Civilian Orientation Conference, Guantanamo Bay, Cuba, April 19, 2008. U.S. Army 1st Sgt. Mark Sanchez goes over proper M-16 A-2 procedures with participants of the 75th Joint Civilian Orientation Conference, Guantanamo Bay, Cuba, April 19, 2008. SHARE: Download: Full Size (5.25 MB) Tags: Photo Essays Credit: VIRIN: 019766-U-HFW69-095.jpg Photo Gallery