there are many to chose from.
According to his military records, he spent about 20 hours in combat, got 28 medals from 23 missions, and none of those medals relate to anything he did on those missions, other than being a POW.
Furthermore, he graduated 790 out of 795 in his class, and lost 5 aircraft during the war. He also was given the nickname "Songbird" while a captive, and not because he was a crooner, although he was a big hit on the enemy radio for 3 years.
No Americans witnessed him being tortured.
He did admit that he broke Article V of the Code of Conduct:
McCain, U.S. News and World Report, May 14, 1973 wrote:
"I think it was on the fourth day
that two guards came in, instead of one. One of them pulled back the blanket to show the other guard my injury. I looked at my knee. It was about the size, shape and color of a football. I remembered that when I was a flying instructor a fellow had ejected from his plane and broken his thigh. He had gone into shock, the blood had pooled in his leg, and he died, which came as quite a surprise to us - a man dying of a broken leg. Then I realized that a very similar thing was happening to me.
"When I saw it, I said to the guard, `O.K., get the officer.'"
"An officer came in after a few minutes. It was the man that we came to know very well as "The Bug." He was a psychotic torturer, one of the worst fiends that we had to deal with. I said, `O.K., I'll give you military information if you will take me to the hospital.'"I respect that he served, but I have a hard time calling him a hero, especially considering how people treated Kerry, who actually earned his medals in combat.