For several months, a dank 6.5-by-7-foot cell at the Hanoi Hilton served as a crucible that tested the limits of human endurance for retired Air Force Col. Leon Ellis and three of his fellow prisoners.

Vietnam vet shares POW experiences, stories (John Murphy)
John Murphy was about 15,000 feet in the air when his vision came back to him. He was also in free fall and still strapped to the ejector seat of the F4 E Phantom fighter-bomber that moments earlier he had been piloting on a mission over North Vietnam before the

