Mike Rowe, Narrator
Mike Rowe – of Dirty Jobs fame – narrated American Chopper off and on throughout its time on the air. He worked on the show during its first seasons on Discovery Channel, and then again when it was on TLC between 2003 and 2007. Rowe then went on to continue with Dirty Jobs, and even hosted Shark Week on Discovery Channel.
Paul Sr. The Marine
Paul Sr. didn’t actually serve in the US army, but he was involved in Vietnam. He was a part of the United States Merchant Marines, which are privately owned vessels that the government is allowed to take control of during wartime. So although he wasn’t exactly in the marines, he did provide naval support to the US armed forces.