The Manhattan Project (1986)

The Manhattan Project
Science Fiction, Thriller
A gifted high school student steals plutonium from the secret nuclear weapons facility in his home town in order to construct his own nuclear bomb, win a national science fair, and expose the government's secrets.
Starring
John Lithgow, Christopher Collet, Cynthia Nixon, Jill Eikenberry, John Mahoney, Richard Jenkins, Robert Sean Leonard, Steve Blum, Sarah Burke, Robert Schenkkan
Directed By
Marshall Brickman