In this photo, reviewed by a U.S. Department of Defense official, a Guantanamo detainee's feet are shackled to the floor as he attends a "Life Skills" class inside the Camp 6 high-security detention facility at Guantanamo Bay U.S. Naval Base April 27, 2010. REUTERS/Michelle Shephard/Pool (CUBA - Tags: MILITARY POLITICS IMAGES OF THE DAY)