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.

Unlikely Warriors: The Army Security Agency’s Secret War In Vietnam (Laird Osburn)
After two nights in the warehouse the three American POWs were moved to a Cambodian Navy bachelor officers’ quarters by the river. Two rooms had been partitioned off on one end of the small building: one room for the officer and one for the enlisted men. Each room had two

