There is unlimited capability in an unconfined imagination.
Have you heard the inspiring story of Navy Fighter Pilot Captain Jack Sands?
As a soldier in the Vietnam War, Captain Sands fought, was shot down, and imprisoned as a POW in the dreaded prison of Hanoi. There, he was confined to isolation and placed in a five-foot by five-foot prison cell -- never knowing if he'd be able to see his family, friends, or even the light of day again.
To say he was in some pretty awful circumstances would be a gross understatement.