Hopefully it's the truth that no mistreatment occurred. Unfortunately, the Pentagon's history of investigating itself about Guantanamo has been pretty poor, as I reported after a trip to GTMO in August 2005:
In response to the public disclosure of the FBI accounts --not the accounts themselves--the Pentagon assigned Generals Randall Schmidt and John Furlow to investigate GuantÃ¡namo interrogations. Their report, released last month, is euphemistic and disingenuous. Schmidt and Furlow maintain that they found "no evidence of torture or inhumane treatment," while simultaneously confirming many of the FBI descriptions. Their most startling conclusion is that nearly every incident they investigated was "authorized" by Pentagon guidelines--guidelines Donald Rumsfeld approved between October 2002 and April 2003. Sometimes, to reach this conclusion, Schmidt and Furlow shoehorn in new definitions to the Army's field manual on interrogations, which complies with the Geneva Conventions. For instance, Schmidt and Furlow consider sexual coercion by female interrogators--including the smearing of fake menstrual blood on a detainee, who subsequently "threw himself on the floor and started banging his head"--to fall within the boundaries of the manual's "Futility" technique. (One veteran of an Army intelligence unit fighting the war on terrorism told me sexual manipulation is decidedly not "Futility.") Qatani, Schmidt and Furlow found, was the subject of a "Special Interrogation Plan." That meant he endured, among other things, high-blast air conditioning that slowed his heartbeat until he required medical attention; was interrogated for 18 to 20 hours daily for 48 days out of a 54-day stretch; was straddled by a female interrogator; and was led on a leash and forced "to perform a series of dog tricks." As their report states: "[E]very technique employed against [Qatani] was legally permissible under the existing guidance."