In the first half of our conversation with retired U.S. Navy Commander Porter Halyburton, we learned about the day he was shot down over North Vietnam, how he was captured and tortured, and the bond he formed with fellow POW Fred Cherry. Today, Halyburton explains the biggest shock of all during his imprisonment, how the prisoners kept their morale up in worst possible conditions over the years, and how they finally got home. In this edition of "Veterans Chronicles," Halyburton details how he found out that he was listed as killed in action and that his wife, family, and government all thought he was dead for about 18 months - and how that problem finally got straightened out.  Halyburton also explains how the famous tap code developed, how they taught it to each other without being able to see or speak with one another in many cases, how they hid the true meaning of the code from the enemy, and how it built the prisoners into a close-knit community. Halyburton also tells us how he figured out he might soon be free more than seven years after being taken prisoner. He shares what that long awaited day of freedom was like and the critical, difficult decisions he made while being released that helped immensely every day after that.