As Trump calls for reopening Alcatraz, its most famous escape is still a mystery

(CNN) — Despite its reputation as ironclad, it was possible to escape Alcatraz. All it took was brains, guts and 50 raincoats.

On June 11, 1962, three prisoners – Frank Morris and brothers Clarence and John Anglin, all in their 30s – shimmied with a homemade raft through hidden holes in their cell walls, climbed through a ventilation duct onto the roof and bolted from the island fortress into the freezing, choppy waters of the San Francisco Bay.

The notion that the island prison...