Paul, to make the video real, prior the waterboarding, you should also stay couple of months in solitary confinement, get exposed to extreme cold and extreme heat, exposed to laud music and bright light for days, be deprived of sleep for many days, stay in stretched positions for hours long, got attacked by dogs, got some psychological and sexual abuse - simply trying all those approved "enhanced investigation methods". I think that passing relaxed only through one discipline you are perfectly trained for is not quite fair.
Most of those guys (EDIT: err, in fact kids and women are among the "investigated" too) have to endure it in such a combination, and they are not trained freedivers, but very often just were on the wrong place at the wrong time - big part of the so-called terrorists were pilgrims sold for a bounty to the occupation forces by locals in Afghanistan or Iraq, or were denounced by other "terrorists" under the coercion. Even if many of them were innocent and released, they had to pass through the "enhanced investigation" - no wonder that many of them conceded to whatever they thought is expected from them to stop the "enhanced investigation" including denouncing couple of people for things they never did.