I just got an exclusive interview with the heckler who interrupted McCain's address. His message was that the GOP nominee has voted against support for veterans. His name is Adam Kokesh, he is 26, and he served in Fallujah in 2004. He is a Ron Paul supporter. A friend of Kokesh's who was a Paul alternate delegate provided him with credentials to get into the Excel Center. Kokesh is a member of the group Iraq Veterans Against the War.
I will transcribe the interview and get it up ASAP.