Marine Pfc. Jacob Gateman lifts a cover April 1, 2009 to show an old trench beneath a road leading toward the elementary school at the U.S. Navy base at Guantanamo Bay, Cuba. The trench was part of old Cold War era defenses established on the 45-square-mile base, where the military reviewed and approved this image for publication. JOHN VANBEEKUM / MIAMI HERALD

A detainee lies down in a recreation area at Camp 6 on March 31, 2009 in this image approved for release by the military at the U.S. Navy base at Guantanamo Bay, Cuba. JOHN VANBEEKUM / MIAMI HERALD

On April 2, 2009, prison camp guards had posted a copy of President Barack Obama's Jan. 22 Executive Order to empty the prison camps within a year on a bulletin board at Camp 4, for cooperative captives, at the U.S. Navy Base at Guantanamo Bay, Cuba JOHN VANBEEKUM / MIAMI HERALD