That was over 37 years ago in 1984.
Today he is 54, and has starred in 123 movies in total, 117 since Red Dawn was released.
In Red Dawn, I think C. Thomas Howell looks:
Red Dawn scores 6.3 out of 10 on The Movie Database.
C. Thomas Howell's first acting role was as 'Tyler' in E.T. the Extra-Terrestrial, released in 1982 when he was 15.