Jeremy Strong was 28 in The Happening when he played the character 'Private Auster'.
That was over 16 years ago in 2008.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 45, and has starred in 28 movies in total, 25 of those since The Happening was released.
In The Happening, I think Jeremy Strong looks: