Excellent film. Clint does his Clint thing and walks around for a bit establishing his Clint beliefs and setting the scene. Then plans an escape. Not just any escape mind. An escape from America's most notorious, infamous and downright bloody rotten prison.
In one perfectly timed scene somebody tells Clint about the mile swim in freezing waters that somebody would have to endure if they actually carved their way through the metres of rock and emerged the sunny side of Alcatraz.
All good Clint stuff. God bless America.