But in one case, 3 quickly found
The US government routinely failed to give detainees at Guantanamo Bay access to witnesses who might have helped them prove their assertions of innocence, saying it could not locate the vast majority of the witnesses the terror suspects requested at special military hearings
But within a three-day span, a Globe reporter was able to locate three of those witnesses in the case of one detainee. The Globe found two of them in Afghanistan, and located a third in Washington, D.C., where he is teaching at the National Defense University.
In 2004, after a Supreme Court ruling, the US military was forced to give hearings to more than 500 prisoners being held without charge at the US detention facility in Cuba. At the time, the military pledged to try to locate defense witnesses to give testimony for those hearings, but later routinely reported that they could not be found.
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In one case, the State Department said that it could not locate Ismail Khan , the well-known minister of energy in Afghan president Hamid Karzai's cabinet, who meets frequently with American diplomats.
http://www.boston.com/news/world/middleeast/articles/2006/06/18/detainees_not_given_access_to_witnesses/