I note the following from Wikipedia:
Through forced suffocation and inhalation of water, the subject experiences the process of drowning in a controlled environment and is made to believe that death is imminent.
CIA officers who have subjected themselves to the technique have lasted an average of 14 seconds before caving in.
"'The person believes they are being killed, and as such, it really amounts to a mock execution, which is illegal under international law,'
Long term effects include panic and gasping for breath whenever it rained even years after his abuse."
OK, sounds pretty bad. Forced inhalation of water is no fun.
Amazing that our country would so this. Sometimes, the ends do not justify the means. Now we join the ranks of the Khmer Rouge, WW II Japanese, the Gestapo, and the Spanish Inquisition.