When we hear tales of POWs from the Vietnam War era, they are often marked by gruesome torture, back-breaking labor, and unimaginable hardship. However, for one POW named Doug Hegdahl, his time in a North Vietnamese prison camp was much easier. His ability to fake ignorance about military information, coupled with a remarkable memory, not only shielded him from the hard life of a prisoner of war, but also helped rescue over 500 of his fellow soldiers.