If you are a fan of video games or action movies, you would probably marvel about snipers and think they possess an unreal ability. What makes your thoughts towards snipers more amazing is that there have been snipers who have done extraordinary things In service of their nation. If you have done your research on the Vietnam war you may be familiar with the individual that is about to be looked at.John Plaster (aka the plastic man) is a retired American army major, sniping expert, and author who is most renowned for being one of the greatest snipers in history. He is a Vietnam vet who was a member of the covert studies and observation group/special operations group (SOG). The group was integral to any success the united states recorded in the Vietnam war but yet so secret that the American government denied their existence at the time. John was one of their leading marksmen and most honorable members.