Here are excerpts from Thomas Wright's story that explain exactly how he got the 3rd PH:
Thomas Wright was one of John F. Kerry's fellow Swift boat officers in Vietnam. Since Wright outranked Kerry, he was Kerry's sometime boat group Officer-in-Charge, so Wright had occasion to observe Kerrys behavior and attitudes, and the circumstances surrounding his early departure from the war zone. The intervening years have not dimmed his memories.
I had a lot of trouble getting him to follow orders, recalls Wright. He had a different view of leadership and operations. Those of us with direct experience working with Kerry found him difficult and oriented towards his personal, rather than unit goals and objectives. I believed that overall responsibility rested squarely on the shoulders of the OIC or OTC in a free-fire zone. You had to be right (before opening fire). Kerry seemed to believe there were no rules in a free-fire zone and you were supposed to kill anyone. I didnt see it that way.
It got to a point where Wright told his divisional commander he no longer wanted Kerry in his boat group, so he was re-assigned to another one. I had an idea of his actions but didnt have to be responsible for him. Then Wright and like-minded boat officers took matters into their own hands. When he got his third Purple Heart, three of us told him to leave. We knew how the system worked and we didnt want him in Coastal Division 11. Kerry didnt manipulate the system, we did.
Very interesting. Kerry sounds like a first-class jerk and even a bit on the unstable side. They probably sent him for his own good (as well as theirs!).