Bruce Greenwood was 22 in Bear Island when he played the character 'Technician (Tommy)'.
That was over 44 years ago in 1979.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 67, and has starred in 113 movies in total, 112 of those since Bear Island was released.
In Bear Island, I think Bruce Greenwood looks: