there's a theory that John McCain was executed. One of the senators slipped by saying, "You can't kill him again." and the flag on his casket was wrinkled. Also the boot was weird, he had it on the wrong leg one time. (Many thinking he was on house arrest) Finally there were some questions about the brain surgery he received, he didn't have the typical signs associated with his specific surgery afterwards. So yea, it's circumstantial.