William B. Davis was 44 in The Dead Zone when he played the character 'Ambulance Driver'.
That was over 41 years ago in 1983.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 86, and has starred in 61 movies in total, 60 of those since The Dead Zone was released.
In The Dead Zone, I think William B. Davis looks: