Craig Roberts retired from the armed forces in 1999 with 30 years total service. He was awarded ten decorations for his Marine Corps service in Vietnam, where he served as a Marine sniper. He was also a career police officer with the Tulsa, Oklahoma, police department. An internationally published writer, he is the author of "Combat Medic-Vietnam" and "Police Sniper, " as well as the co-author of "One Shot-One Kill, " and "The Walking Dead."