In this June 27, 2006, file photo, reviewed by the U.S. Department of Defense, U.S. military guards walk within the Camp Delta military-run prison at the Guantanamo Bay U.S. Naval Base in Cuba. (AP Photo/Brennan Linsley) ** FILE **

Photo by: Brennan Linsley

In this June 27, 2006, file photo, reviewed by the U.S. Department of Defense, U.S. military guards walk within the Camp Delta military-run prison at the Guantanamo Bay U.S. Naval Base in Cuba. (AP Photo/Brennan Linsley) ** FILE **