Managed improperly one could drown. That would not longer be water boarding, it would be drowning. What permanent damage are you implying? Any kid who ever accidently inhaled a little water up his nose while swimming has experienced water boarding without permanent damage. It causes very uncomfortable reflex actions. No permanent damage. (I was at Warner springs in 85)
PTSD is the most common disability in VA due to waterboarding.
Were you waterboarded?
Did you waterboard anyone?
It’s very damaging to pride. To a lawyer that qualifies as permanent emotional distress.