What are people's thoughts are water boarding???/
A lot of U.S. military personnel go through it as part of their training.
If it's conducted outside the US (like in Poland and Romania like these were, or on the battlefield), to non-US citizens, for the purpose of gaining useful intelligence from enemy combatants and not for punishment, go for it. That has been my opinion for years and will stay that way for the foreseeable future.
This is a mid level interrogation technique--not as harsh as what our enemies do to us, or other countries regularly use.