If some nutcase buried my kid with a limited supply of O2, I'd do whatever it took to get the information I need to save my kid. I assume this is what interrogators have in mind when they got someone important, the faster they get the information the better. Waterboarding is acceptable on people we know to be terrorists, that limits its use to maybe a few dozen people but if it works...it works... If someone is trying to kill me, do I have to respect their human rights? I dont think so, I just gotta make sure they're guilty.