After two years in which the military sought to manage terrorism suspects at Guantánamo with incentives for good behavior, steady improvements in their living conditions and even dialogue with prison leaders, the authorities here have clamped down decisively in recent months.
Security procedures have been tightened. Group activities have been scaled back. With the retrofitting of Camp 6 and the near-emptying of another showcase camp for compliant prisoners, military officials said about three-fourths of the detainees would eventually be held in maximum-security cells. That is a stark departure from earlier plans to hold a similar number in medium-security units.