Pucker Factor Stories of MACV SOG is a unique format. The author was adamant the stories contained in this series be in the veterans own words. Gaining the trust of these men of SOG was no easy task. Asking if they would be willing to share a story was something completely different. But 5 books in the objective has been reached. Now is the time to read about these brave warriors. Now is the time to ask them questions about their service.