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UNCLASSIFIED TOP SECRET////NOFORN medical officer from reporting on the interrogation directly to OMS outside of official CIA cable traffic.

( TS////NF ) On March 12, 2003, KSM provided information on the Heathrow Airport and Canary Wharf plotting. KSM stated that he showed a sketch in his notebook of a building in Canary Wharf (a major business district in London) to Ammar al-Baluchi. He also provided statements about directing prospective pilots to study at flight schools, and stated that Jaffar al-Tayyar was involved in the Heathrow Plot. KSM retracted all of this information later in his detention. There are no CIA records indicating that these and other retractions were assessed to be false.

( TS////NF ) The March 12, 2003, reporting from KSM on the Heathrow Airport plotting was deemed at the time by CIA interrogators to be an effort by KSM to avoid discussion of plotting inside the United States and thus contributed to the decision to subject KSM to two waterboarding sessions that day. During these sessions, KSM ingested a significant amount of water. CIA records state that KSM's "abdomen was somewhat distended and he expressed water when the abdomen was pressed." KSM's gastric contents were so diluted by water that the medical officer present was "not concerned about regurgitated gastric acid damaging KSM's esophagus." The officer was, however, concerned about water intoxication and dilution of electrolytes and requested that the interrogators use saline in future waterboarding sessions. The medical officer later wrote to OMS that KSM was "ingesting and aspiration [sic] a LOT of water," and that "[i]n the new technique we are basically doing a series of near drownings." During the day, KSM was also subjected to the attention grasp, insult slap, abdominal slap, and walling.

( TS////NF ) On March 13, 2003, after KSM again denied that al-Qa'ida had operations planned for inside the United States, CIA interrogators decided on a "day of intensive TOP SECRET////NOFORN Page 86 of 499

UNCLASSIFIED