If your family members, or an airliner or a city could be possibly be saved via the use of water boarding are you saying you would refuse to do so because of your morals?  I think one would try everything to save the people in the above circumstances.  And don't say torture doesn't work, because it does. Yes it may be evil, but some times evil is needed to fight evil. I and many others would put the survival of others above their morals.