The following techniques, although under heavy debate, are still legal in the U.S., and are used on detainees, POWs, and other people the U.S. interrogates. Careful; these photos are very graphic and disturbing.

John McCain endured horrific torture during his time as a POW in Vietnam. He was shot down in 1967 while on a bombing mission, and he was captured and held as a prisoner of war. Interestingly, it’s hard to pin down his position on whether the U.S. has the right to torture the people it captures.