This article talks about three men who are said to be the only successful escapist of Alcatraz. John and Clarence Anglin and Frank Lee Morris were the three men who somehow managed to slip away from the constant and heavy security of Alcatraz Prison.
The elaborate plan of the these three men was thought out, reorganized, and worked on until almost perfect. They began their escape by chipping away at an air vent that lead to outside. They made fake grills out of cardboard to cover the holes and help them to blend into the ceiling.