Vice President Cheney was born January 30, 1941. This means that in 1966 he was 25. By the time the Viet Nam war was in full swing, 1968, he was 28, he was married and a father.
He wasn't draft material, and I find it amazing that they think they can attack on this issue. McAuliffe might have been too young to serve, but Cheney was almost TOO OLD.