Twice a day at the military detention center at Guantanamo Bay, Cuba, guards take a number of detainees from their cells, one at a time, to a camp clinic or a private room on their block. The detainees are offered a hot meal or a liquid nutritional supplement and, if they refuse, they are strapped into a chair. A nurse then passes a tube through their noses and down into their stomachs; for one to two hours, they are fed a drip of Ensure while a Navy corpsman watches.